Skip to content

Economy of Indonesia vs South Korea compared: GDP & Debt

Updated on by Georank team

Indonesia has a GDP of $1.4T compared to $1.88T for South Korea, ranking 16/197 and 12/197 by economy size, respectively.

Indonesia has $561B in government debt (40.2% of GDP), compared to $934B (49.8% of GDP) in South Korea.

Indonesia vs South Korea GDP by year

Indonesia
South Korea
1x
Year GDP, current $
Indonesia South Korea
2024 $1,396,300,098,191 $1,875,388,209,407
2023 $1,371,169,301,564 $1,844,800,934,392
2022 $1,319,101,183,380 $1,799,363,116,867
2021 $1,186,509,691,087 $1,942,313,560,966
2020 $1,059,054,842,698 $1,744,070,276,373
2019 $1,119,099,871,350 $1,751,045,752,055
2018 $1,042,271,532,989 $1,824,251,454,307
2017 $1,015,618,744,160 $1,710,196,756,713
2016 $931,877,364,038 $1,579,150,518,945
2015 $860,854,232,686 $1,539,212,301,136
2014 $890,814,755,534 $1,556,252,422,020
2013 $912,524,136,718 $1,434,669,686,502
2012 $917,869,913,333 $1,335,343,586,438
2011 $892,969,104,563 $1,307,103,477,219
2010 $755,094,157,622 $1,192,830,015,738
2009 $539,580,085,612 $983,065,242,417
2008 $510,228,634,992 $1,091,580,692,542
2007 $432,216,737,775 $1,220,911,904,593
2006 $364,570,515,618 $1,095,175,538,508
2005 $285,868,619,196 $971,740,329,984
2004 $256,836,875,295 $823,251,107,639
2003 $234,772,463,824 $728,516,494,684
2002 $195,660,611,165 $650,014,391,470
2001 $160,446,947,785 $567,564,806,235
2000 $165,021,012,078 $597,487,173,479
1999 $140,001,351,215 $515,697,079,289
1998 $95,445,547,873 $397,297,216,492
1997 $215,748,998,610 $589,202,526,424
1996 $227,369,679,375 $631,196,863,758
1995 $202,132,028,723 $586,286,469,401
1994 $176,892,143,932 $479,181,794,217
1993 $158,006,700,302 $405,705,302,846
1992 $128,026,966,580 $366,921,291,825
1991 $116,621,996,217 $340,851,946,804
1990 $106,140,727,334 $292,064,221,389
1989 $94,451,427,877 $254,236,243,100
1988 $84,300,174,486 $205,477,530,605
1987 $75,929,617,558 $152,240,393,646
1986 $79,954,072,545 $119,965,960,795
1985 $85,289,488,375 $103,764,281,281
1984 $84,853,700,028 $99,749,645,089
1983 $81,052,283,384 $89,621,208,322
1982 $90,158,449,295 $79,921,300,447
1981 $85,518,233,419 $74,287,368,087
1980 $72,482,337,397 $66,547,970,351
1979 $51,400,186,343 $68,083,884,298
1978 $51,455,719,076 $52,824,793,388
1977 $45,808,915,663 $39,064,462,810
1976 $37,269,156,627 $30,371,074,380
1975 $30,463,855,422 $22,126,033,058
1974 $25,802,409,639 $19,860,929,977
1973 $16,273,253,012 $14,067,523,813
1972 $10,997,590,361 $10,990,490,570
1971 $9,333,536,370 $10,005,257,131
1970 $9,150,684,932 $9,085,001,794
1969 $8,337,423,313 $7,743,940,189
1968 $7,076,465,300 $6,167,109,472
1967 $5,667,756,628 $4,895,076,718
1966 - $3,957,064,541
1965 - $3,141,131,708
1964 - $3,476,789,682
1963 - $4,007,692,308
1962 - $2,826,923,077
1961 - $2,427,244,761
1960 - $3,973,069,307

Data sources: World Bank | Economy & Growth (1960–2024, retrieved 2026-04-06).

GeoRank.org/economy/indonesia/south-korea | CC BY

GDP per capita in Indonesia vs South Korea by year

Indonesia
GDP per capita

GDP per capita, PPP
South Korea
GDP per capita

GDP per capita, PPP
1x
Year Current $
Indonesia South Korea
GDP per capita GDP per capita, PPP GDP per capita GDP per capita, PPP
2024 $4,925 $16,448 $36,239 $61,051
2023 $4,876 $15,416 $35,674 $57,430
2022 $4,731 $14,285 $34,822 $55,509
2021 $4,287 $12,757 $37,518 $51,718
2020 $3,854 $11,729 $33,646 $47,881
2019 $4,107 $11,986 $33,827 $46,511
2018 $3,861 $11,372 $35,364 $45,511
2017 $3,799 $10,688 $33,297 $43,156
2016 $3,521 $10,263 $30,832 $41,673
2015 $3,288 $10,028 $30,172 $39,794
2014 $3,441 $10,065 $30,667 $37,032
2013 $3,567 $9,866 $28,449 $35,844
2012 $3,632 $9,530 $26,601 $35,062
2011 $3,579 $8,937 $26,175 $33,944
2010 $3,066 $8,353 $24,071 $33,120
2009 $2,218 $7,868 $19,937 $30,740
2008 $2,125 $7,569 $22,252 $31,211
2007 $1,823 $7,096 $25,078 $30,255
2006 $1,558 $6,583 $22,610 $27,972
2005 $1,238 $6,134 $20,167 $26,179
2004 $1,127 $5,700 $17,122 $24,658
2003 $1,043 $5,353 $15,212 $22,920
2002 $881 $5,076 $13,643 $22,173
2001 $732 $4,849 $11,981 $20,442
2000 $764 $4,639 $12,710 $19,237
1999 $657 $4,386 $11,063 $17,421
1998 $455 $4,356 $8,583 $15,500
1997 $1,045 $5,037 $12,822 $16,241
1996 $1,119 $4,807 $13,865 $15,164
1995 $1,011 $4,451 $13,002 $13,921
1994 $900 $4,096 $10,734 $12,551
1993 $817 $3,793 $9,180 $11,349
1992 $674 $3,538 $8,387 $10,468
1991 $624 $3,305 $7,873 $9,724
1990 $578 $3,044 $6,813 $8,567
1989 $524 - $5,989 -
1988 $477 - $4,889 -
1987 $438 - $3,658 -
1986 $470 - $2,911 -
1985 $511 - $2,543 -
1984 $520 - $2,469 -
1983 $508 - $2,246 -
1982 $578 - $2,032 -
1981 $561 - $1,918 -
1980 $487 - $1,746 -
1979 $353 - $1,814 -
1978 $362 - $1,429 -
1977 $331 - $1,073 -
1976 $275.7 - $847 -
1975 $231.1 - $627 -
1974 $200.7 - $572 -
1973 $129.9 - $412 -
1972 $90.1 - $328 -
1971 $78.5 - $304 -
1970 $79.1 - $281.8 -
1969 $74.1 - $245.5 -
1968 $64.7 - $200 -
1967 $53.2 - $162.5 -
1966 - - $134.4 -
1965 - - $109.4 -
1964 - - $124.2 -
1963 - - $147 -
1962 - - $106.6 -
1961 - - $94.2 -
1960 - - $158.8 -

Data sources: World Bank | Economy & Growth (1960–2024, retrieved 2026-04-06).

GeoRank.org/economy/indonesia/south-korea | CC BY

Indonesia's GDP per capita is $4,925, ranking 121/197, compared to $36,239 in South Korea, ranking 31/197. Adjusted for purchasing power (GDP per capita PPP), Indonesia ranks 107th at $16,448, while South Korea ranks 33rd at $61,051.

Economic indicators

Indonesia South Korea
Gross domestic product
$1.4T
2024
$1.88T
2024
GDP rank
16/197
2024
12/197
2024
GDP growth
5.03%
2023-2024
2%
2023-2024
GDP per capita
$4,925
2024
$36,239
2024
GDP per capita rank
121/197
2024
31/197
2024
GDP per capita, PPP
$16,448
2024
$61,051
2024
GDP per capita PPP rank
107/197
2024
33/197
2024
Government debt
$561B
2024
$934B
2024
Debt-to-GDP ratio
40.2%
2024
49.8%
2024
Government debt per person
$1,978
2024
$18,052
2024
Government debt per person rank
120/185
2024
33/185
2024
Average annual personal income after taxes
$3,371
2026
$27,215
2026
Market capitalization of domestic companies
$758B
2023
$1.56T
2024
Number of millionaires
178,605
2025
1,301,000
2025
Number of billionaires
33
2025
30
2025
Income share by richest 10%
28.8%
2024
24.6%
2021
Income share by poorest 10%
3.5%
2024
2.9%
2021
Government expenditure, % of GDP
16.8%
2024
22.5%
2024
Consumer prices inflation
2.18%
2023-2024
2.32%
2023-2024
Central bank interest rate
4.75%
2025
2.5%
2025
Unemployment rate
3.31%
2023
2.78%
2024
Population
288551776
51649918

Spending and national debt comparison by year

Indonesia
Spending

Debt
South Korea
Spending

Debt
1x
Year % of GDP
Indonesia South Korea
Government spending Government debt Government spending Government debt
2024 16.8% 40.2% 22.5% 49.8%
2023 16.6% 39.6% 23.1% 50.5%
2022 17.3% 40.1% 26.7% 49.8%
2021 18.1% 41.1% 24.1% 48%
2020 18.4% 39.7% 23.7% 45.9%
2019 16.4% 30.6% 21.3% 39.7%
2018 16.6% 30.4% 19.3% 37.9%
2017 16.4% 29.4% 18.6% 38%
2016 16.9% 28% 18.5% 39.1%
2015 17.6% 27% 18.8% 38.8%
2014 18.4% 24.6% 18.8% 37.9%
2013 18.8% 24.9% 19% 36%
2012 18.8% 23% 18.8% 33.5%
2011 17.7% 23.1% 18.3% 31.7%
2010 16.9% 26.4% 17.9% 28.3%
2009 17% 26.5% 19.5% 28.8%
2008 19.4% 30.3% 19.1% 25.9%
2007 18.7% 38.1% 18.8% 26.3%
2006 18.4% 35.8% 18.7% 27%
2005 17.4% 42.6% 18.2% 24.9%
2004 17.8% 51.3% 18.5% 21.6%
2003 18.2% 55.6% 17.9% 19.1%
2002 16.9% 62.3% 15.9% 16.4%
2001 19.5% 73.7% 16.9% 16.6%
2000 15.3% 87.4% 16% 16.1%
1999 15.1% 95.9% 16.1% 15.8%
1998 15.1% 72.5% 16% 13.8%
1997 15.2% 26.4% 13.9% 9.69%
1996 11.5% 27.5% 14% 7.81%
1995 11.9% 32% 13.5% 8.48%
1994 13.5% 37% 15.4% 9.63%
1993 14.1% 40.4% 15.1% 10.9%
1992 16.8% 42.6% 15.5% 11.6%
1991 15% 39.2% 15.4% 11.9%
1990 15.8% 40.8% 15.2% 12.8%
1989 16.5% 42.5% 15% 12.4%
1988 17.3% 45.6% 13.9% 12.7%
1987 18% 49.7% 14.3% 15.3%
1986 20.9% 38.3% 14.9% 14.5%
1985 18.5% 28% 15.5% 16.2%
1984 16.1% 23.5% 15.6% 16.9%
1983 18.2% 23.1% 16% 19.3%
1982 18.8% 18.6% 17.8% 20.5%
1981 24.4% 16.4% 16.3% 18.8%
1980 22.1% 17.3% 16.8% 18.6%
1979 20.9% 22% 16.3% 15.7%
1978 20.1% 30.3% 15.7% 18.4%
1977 19.5% 27.7% 17.7% 20.1%
1976 21.8% 38.1% 17% 20.4%
1975 20.5% 36.7% 18.8% 21.5%
1974 17.3% 34.4% 16.1% 18.6%
1973 16.3% 43.1% 14.2% 17.9%
1972 15.7% 51.2% 18.5% 18.3%
1971 14.5% 50.5% 18.5% 14.5%
1970 13.8% 46.7% 17.5% 6.95%
1969 12.8% - 19.8% 2.63%
1968 8.82% - 18.5% 2.76%
1967 10.4% - 16.7% 3.74%
1966 9.18% - 16% 4.44%
1965 10.7% - 13.1% 6.14%
1964 9.55% - 12.1% 6.57%
1963 10.3% - 15.4% 9.21%
1962 7.89% - 22.3% 13%
1961 15.1% - 21.2% 13.4%
1960 14.4% - 17.9% 13.7%

Data sources: International Monetary Fund (IMF) | Public Finances in Modern History (1960–1999, retrieved 2026-02-20); International Monetary Fund (IMF) | Fiscal Monitor (1990–2024, retrieved 2026-02-20).

GeoRank.org/economy/indonesia/south-korea | CC BY

In 2024, Indonesia's government spending was $235B, accounting for 16.8% of its GDP, while South Korea spent $423B, or 22.5% of GDP.

Debt-to-GDP ratio is 40.2% in Indonesia and 49.8% in South Korea, ranking 132/185 and 110/185, respectively.

Government deficit by year

Deficit/surplus
Indonesia

South Korea
1x
Year Deficit/surplus, % of GDP
Indonesia South Korea
2024 -2.3% -0.78%
2023 -1.64% -0.67%
2022 -2.31% -1.49%
2021 -4.4% -0.02%
2020 -6.07% -2.11%
2019 -2.09% 0.35%
2018 -1.69% 2.42%
2017 -2.26% 2.08%
2016 -2.56% 1.56%
2015 -2.72% 0.5%
2014 -1.8% 0.57%
2013 -1.96% 0.79%
2012 -1.59% 1.63%
2011 -0.7% 1.72%
2010 -1.24% 1.61%
2009 -1.64% 0.24%
2008 0.05% 1.58%
2007 -0.95% 2.49%
2006 0.45% 1.18%
2005 0.46% 0.95%
2004 -0.26% 0.09%
2003 -1.08% 1.51%
2002 -0.58% 3.23%
2001 -1.76% 2.42%
2000 -1.87% 3.91%
1999 -0.96% 1.15%
1998 -1.89% 1.09%
1997 -1.03% 2.31%
1996 0.96% 2.3%
1995 0.64% 2.16%
1994 0.005% 2.06%
1993 -0.59% 3.21%
1992 -2.95% 2.42%
1991 -0.87% 1.94%
1990 -0.55% 2.98%
1989 -1.72% 2.27%
1988 -2.68% 2.85%
1987 -0.9% 1.7%
1986 -2.94% 0.8%
1985 -0.45% 0.47%
1984 1.83% 0.78%
1983 -1% 1.05%
1982 -1.11% -0.41%
1981 -0.69% 0.99%
1980 -0.82% 0.46%
1979 -0.67% 0.47%
1978 -2.03% -0.27%
1977 -0.38% -1.81%
1976 -2.63% -0.87%
1975 -2.33% -3.68%
1974 -0.35% -2.78%
1973 -1.33% -1.72%
1972 -1.82% -4.33%
1971 -2.51% -1.3%
1970 -3.02% -0.52%
1969 -2.8% -2.85%
1968 0% -2.36%
1967 -0.35% -2.87%
1966 -5.06% -4.27%
1965 -6.62% -3.43%
1964 -5.58% -4.1%
1963 -5.24% -4.32%
1962 -3.1% -7.82%
1961 -4.57% -9.48%
1960 -1.65% -5.18%
1959 -4.06% -6.52%
1958 -6.67% -10%
1957 -2.92% -10.1%
1956 -1.38% -10.8%
1955 -1.6% -10.6%
1954 -3.16% -10.3%
1953 -2.33% -4.14%
1952 -3.66% -
1951 1.52% -

Data sources: International Monetary Fund (IMF) | Public Finances in Modern History (1951–1994, retrieved 2026-02-20); International Monetary Fund (IMF) | Fiscal Monitor (1990–2024, retrieved 2026-02-20).

GeoRank.org/economy/indonesia/south-korea | CC BY

In 2024, Indonesia's government deficit, the difference between spending and revenue, was $32.1B, equivalent to 2.3% of GDP. This compares to South Korea's deficit of $14.7B, or 0.78% of GDP.

Over the past 58 years, Indonesia recorded a fiscal deficit in 50 of those years, while South Korea ran a deficit in 18 years. On average, Indonesia posted an annual deficit equal to 1.39% of GDP, compared to surplus of 0.58% of GDP for South Korea.

Inflation comparison by year

Inflation
Indonesia

South Korea
1x
Year Consumer prices inflation
Indonesia South Korea
2024 2.18% 2.32%
2023 3.67% 3.6%
2022 4.21% 5.09%
2021 1.56% 2.5%
2020 1.92% 0.54%
2019 3.03% 0.38%
2018 3.2% 1.48%
2017 3.81% 1.94%
2016 3.53% 0.97%
2015 6.36% 0.71%
2014 6.39% 1.27%
2013 6.41% 1.3%
2012 4.28% 2.19%
2011 5.36% 4.03%
2010 5.13% 2.94%
2009 4.39% 2.76%
2008 10.2% 4.67%
2007 6.41% 2.53%
2006 13.1% 2.24%
2005 10.5% 2.75%
2004 6.06% 3.59%
2003 6.76% 3.51%
2002 11.9% 2.76%
2001 11.5% 4.07%
2000 3.69% 2.26%
1999 20.5% 0.81%
1998 58.5% 7.51%
1997 6.23% 4.44%

Data sources: World Bank | Economy & Growth (1997–2024, retrieved 2026-04-06).

GeoRank.org/economy/indonesia/south-korea | CC BY

Over the past 28 years, Indonesia has recorded an average annual inflation rate of 8.24%, compared with 2.68% in South Korea. In 2024, inflation was 2.18% in Indonesia and 2.32% in South Korea.

Top exports between countries

Indonesia
Export category Export value
Raw materials & minerals $5.33B
Machinery & equipment $1.47B
Metals $882M
Textiles & consumer goods $863M
Wood & paper products $699M
Chemicals & pharma $631M
Processed food, beverages & tobacco $533M
Precious metals & jewellery $219M
Animal & marine products $81.7M
Raw agricultural goods $35.4M
South Korea
Export category Export value
Machinery & equipment $2.26B
Chemicals & pharma $1.62B
Raw materials & minerals $1.48B
Metals $1.22B
Textiles & consumer goods $785M
Processed food, beverages & tobacco $212M
Wood & paper products $146M
Miscellaneous $78M
Precious metals & jewellery $55.2M
Animal & marine products $53.6M

Balance of trade

Indonesia South Korea
Current account balance
-$8.72B
2024
$99B
2024
Current account balance ranking
174/190
2024
7/190
2024
Current account balance, % of GDP
-0.62%
2024
+5.28%
2024
Goods imports
$223B
2024
$596B
2024
Goods exports
$263B
2024
$696B
2024
Service imports
$57.6B
2024
$163B
2024
Service exports
$39B
2024
$139B
2024
Imports of goods and services, % of GDP
20.4%
2024
40.3%
2024
Exports of goods and services, % of GDP
22.2%
2024
44.4%
2024

Economic freedom indices

The indices of economic freedom below are issued by the Heritage Foundation. Higher scores indicate stronger economic health.

Indonesia South Korea
Economic freedom 65.1 73.7
Economic freedom ranking 67/197 24/197
Property rights 39.7 89.6
Government integrity 42 70.9
Judicial effectiveness 43.1 77.5
Tax burden 81.5 61.5
Government spending 91.4 82.6
Fiscal health 89.8 93.5
Business freedom 69.2 81.5
Labor freedom 56.8 55
Monetary freedom 79.4 79.3
Trade freedom 78.6 73
Investment freedom 50 60
Financial freedom 60 60

Economic freedom comparison by year

Indonesia
South Korea
1x
Year Economic freedom index
Indonesia South Korea
2026 65.1 73.7
2025 65.2 74
2024 63.5 73.1
2023 63.5 73.7
2022 64.4 74.6
2021 66.9 74
2020 67.2 74
2019 65.8 72.3
2018 64.2 73.8
2017 61.9 74.3
2016 59.4 71.7
2015 58.1 71.5
2014 58.5 71.2
2013 56.9 70.3
2012 56.4 69.9
2011 56 69.8
2010 55.5 69.9
2009 53.4 68.1
2008 53.2 68.6
2007 53.2 67.8
2006 51.9 67.5
2005 52.9 66.4
2004 52.1 67.8
2003 55.8 68.3
2002 54.8 69.5
2001 52.5 69.1
2000 55.2 69.7
1999 61.5 69.7
1998 63.4 73.3
1997 62 69.8
1996 61 73
1995 54.9 72

Data sources: The Heritage Foundation | Economic Freedom Index (1995–2026, retrieved 2026-03-09).

GeoRank.org/economy/indonesia/south-korea | CC BY

The Economic Freedom Index for Indonesia is 65.1, ranking 67/197, compared to 73.7 for South Korea, ranking 24/197. The chart above displays a comparison of annual changes in economic freedom indexes.

Other economic metrics

Indonesia South Korea
Services, % of GDP
43.8%
2024
57.5%
2024
Industry, % of GDP
39.3%
2024
33.9%
2024
Agriculture, forestry, and fishing, % of GDP
12.6%
2024
1.46%
2024
GNI, Atlas method
$1.39T
2024
$1.9T
2024
GNI per capita, PPP
$16,010
2024
$61,930
2024
Total reserves including gold
$156B
2024
$418B
2024
Total reserves ranking
20/177
2024
8/177
2024
Net foreign direct investment
-$15.9B
2024
$33.4B
2024
Net inflows of foreign direct investment
$24.2B
2024
$15.2B
2024
Net outflows of foreign direct investment
$8.39B
2024
$48.6B
2024
Servicing debt to the IMF, % of GNI
5.65%
2024
n/a
Poverty at national poverty lines
9%
2024
14.4%
2020
Gross capital formation, % of GDP
31.4%
2024
30%
2024

GDP per capita map

1x

Data sources: World Bank | Economy & Growth (1985–2024, retrieved 2026-04-06); U.S. Census Bureau (1985–2024, retrieved 2026-02-08).

GeoRank.org/economy/indonesia/south-korea | CC BY

Compare countries by 7 more topics

Help us show the world through your eyes

Share a photo of your city and help others discover what it looks like to live there. Your contribution makes our data come alive.

Data sources:

  1. World Bank | Economy & Growth (1960–2024, retrieved 2026-04-06)
  2. International Monetary Fund (IMF) | Public Finances in Modern History (1951–1999, retrieved 2026-02-20)
  3. International Monetary Fund (IMF) | Fiscal Monitor (1990–2024, retrieved 2026-02-20)
  4. The Heritage Foundation | Economic Freedom Index (1995–2026, retrieved 2026-03-09)
  5. U.S. Census Bureau (1985–2024, retrieved 2026-02-08)
  6. TradeMap (2024, retrieved 2026-02-08)
  7. United Nations | World Population Prospects (2026, retrieved 2026-03-10)
  8. LivingCost (2026, retrieved 2025-10-14)
  9. Central Intelligence Agency (CIA) (2020, retrieved 2026-02-20)

Creative Commons Attribution (CC BY) — you’re free to copy, share, remix, adapt, and use even commercially as long as you give appropriate credit and clearly indicate if you made changes. Other sources may be subject to different license terms.

The current account balance is the sum of net trade in goods and services, net earnings from cross-border investments, and net transfer payments. It reflects a country's economic transactions with the rest of the world and is a fundamental component of the balance of payments. A surplus indicates that a country exports more than it imports, while a deficit shows the opposite.

Gross National Income (GNI) measures a country's total income. It encompasses income earned by residents, businesses, and foreign sources, defined as employee compensation and investment profits. GNI adds product taxes not included elsewhere and subtracts subsidies. It accounts for income from residents working abroad but excludes earnings from foreigners within the country.

A negative value for Net Foreign Direct Investment indicates a country is a net receiver of investments, as foreign inflows exceed outflows after Balance of Payments adjustments. A positive value indicates a net provider, with outflows exceeding inflows. Inflows are credits (increasing foreign claims on domestic assets), while outflows are debits (increasing domestic assets abroad).

Foreign direct investment (FDI, net inflows) shows how much capital foreign investors bring into a country after accounting for any funds that flow back in the opposite direction. It represents the net value of overseas companies establishing, expanding, or financing businesses in the reporting country. A positive number means more capital entered the country than was withdrawn, while a negative number means foreign investors pulled out more than they invested.

Foreign direct investment (FDI, net outflows) shows how much capital residents of a country invest abroad after accounting for any funds that flow back in the opposite direction. It represents the net value of domestic companies establishing, expanding, or financing businesses in other countries. A positive number means more capital was invested abroad than withdrawn, while a negative number means residents pulled back more than they invested.

Principal and interest payments to the IMF in currency, goods, or services on long-term debt expressed as a share of GNI.

Formerly gross domestic investment, gross capital formation measures the share of a country’s economic output invested in fixed assets, including buildings, machinery, and infrastructure. It indicates how much of the economy is devoted to building productive capacity.