The latest officially reported population of Angola was 39,040,039 in 2025 vs 49,355,143 people in Spain in 2025. In 2026, based on the adjusted UN estimation, the current Angola's population is 40,839,390 people compared to 49,323,658 in Spain.
Population statistics:
- Spain's population is 1.21 times bigger than Angola's.
- Angola is ranked the 39th most populous country in the world, while Spain is the 32nd.
- The countries together account for 1.09% of the world: 0.49% for Angola vs 0.59% for Spain.
- For the last 10 years, Angola has had an average growth rate of +3.35% per year vs +0.55% in Spain.
- Since 2006, the population of Angola has increased from 20M people to 40.8M (104% growth), while Spain has grown from 44.4M to 49.3M (11.1% growth).
Angola vs Spain: population by year and forecast
| Year | Population | |
|---|---|---|
Angola
|
Spain
|
|
| 2100 | 151,745,560 | 34,221,514 |
| 2099 | 150,580,846 | 34,400,373 |
| 2098 | 149,371,332 | 34,577,450 |
| 2097 | 148,157,199 | 34,751,199 |
| 2096 | 146,917,291 | 34,917,831 |
| 2095 | 145,643,156 | 35,087,012 |
| 2094 | 144,344,232 | 35,251,362 |
| 2093 | 143,034,129 | 35,415,082 |
| 2092 | 141,703,568 | 35,577,396 |
| 2091 | 140,334,886 | 35,741,351 |
| 2090 | 138,936,092 | 35,912,083 |
| 2089 | 137,506,079 | 36,086,009 |
| 2088 | 136,062,795 | 36,257,546 |
| 2087 | 134,636,543 | 36,424,826 |
| 2086 | 133,167,448 | 36,594,101 |
| 2085 | 131,683,455 | 36,771,456 |
| 2084 | 130,187,166 | 36,951,760 |
| 2083 | 128,698,380 | 37,138,777 |
| 2082 | 127,189,065 | 37,327,720 |
| 2081 | 125,660,931 | 37,527,142 |
| 2080 | 124,081,831 | 37,732,838 |
| 2079 | 122,531,773 | 37,949,144 |
| 2078 | 120,943,083 | 38,171,047 |
| 2077 | 119,346,457 | 38,405,329 |
| 2076 | 117,760,251 | 38,654,221 |
| 2075 | 116,163,901 | 38,913,733 |
| 2074 | 114,532,128 | 39,188,284 |
| 2073 | 112,882,228 | 39,469,767 |
| 2072 | 111,237,086 | 39,765,059 |
| 2071 | 109,585,937 | 40,062,070 |
| 2070 | 107,926,358 | 40,372,388 |
| 2069 | 106,259,591 | 40,682,818 |
| 2068 | 104,595,822 | 41,005,148 |
| 2067 | 102,932,514 | 41,326,772 |
| 2066 | 101,264,338 | 41,654,672 |
| 2065 | 99,592,310 | 41,983,104 |
| 2064 | 97,913,552 | 42,321,736 |
| 2063 | 96,226,883 | 42,655,212 |
| 2062 | 94,553,276 | 42,993,328 |
| 2061 | 92,858,735 | 43,328,037 |
| 2060 | 91,176,863 | 43,648,753 |
| 2059 | 89,496,029 | 43,967,376 |
| 2058 | 87,815,720 | 44,273,756 |
| 2057 | 86,132,700 | 44,579,723 |
| 2056 | 84,471,522 | 44,885,952 |
| 2055 | 82,803,166 | 45,164,935 |
| 2054 | 81,142,960 | 45,434,986 |
| 2053 | 79,495,406 | 45,702,038 |
| 2052 | 77,850,968 | 45,951,973 |
| 2051 | 76,228,492 | 46,179,119 |
| 2050 | 74,607,823 | 46,397,620 |
| 2049 | 72,992,295 | 46,616,167 |
| 2048 | 71,394,788 | 46,812,693 |
| 2047 | 69,815,777 | 47,002,591 |
| 2046 | 68,240,689 | 47,182,235 |
| 2045 | 66,696,806 | 47,354,908 |
| 2044 | 65,156,717 | 47,514,076 |
| 2043 | 63,622,191 | 47,657,627 |
| 2042 | 62,105,363 | 47,801,904 |
| 2041 | 60,603,786 | 47,936,819 |
| 2040 | 59,109,042 | 48,066,825 |
| 2039 | 57,632,744 | 48,190,225 |
| 2038 | 56,169,001 | 48,304,880 |
| 2037 | 54,733,769 | 48,418,168 |
| 2036 | 53,306,523 | 48,528,778 |
| 2035 | 51,903,187 | 48,633,960 |
| 2034 | 50,516,462 | 48,730,594 |
| 2033 | 49,150,241 | 48,823,356 |
| 2032 | 47,812,275 | 48,914,944 |
| 2031 | 46,491,571 | 49,008,735 |
| 2030 | 45,194,288 | 49,094,273 |
| 2029 | 43,916,013 | 49,163,780 |
| 2028 | 42,656,153 | 49,223,677 |
| 2027 | 41,425,838 | 49,274,441 |
| 2026 | 40,219,996 | 49,323,658 |
| 2025 | 39,040,039 | 49,355,143 |
| 2024 | 37,885,849 | 48,848,840 |
| 2023 | 36,749,906 | 48,352,528 |
| 2022 | 35,635,029 | 47,786,102 |
| 2021 | 34,532,429 | 47,443,821 |
| 2020 | 33,451,132 | 47,359,424 |
| 2019 | 32,375,632 | 47,118,501 |
| 2018 | 31,297,155 | 46,782,011 |
| 2017 | 30,234,839 | 46,571,232 |
| 2016 | 29,183,070 | 46,458,139 |
| 2015 | 28,157,798 | 46,422,303 |
| 2014 | 27,160,769 | 46,460,733 |
| 2013 | 26,165,620 | 46,604,197 |
| 2012 | 25,177,394 | 46,773,055 |
| 2011 | 24,218,352 | 46,742,697 |
| 2010 | 23,294,825 | 46,576,897 |
| 2009 | 22,414,773 | 46,362,946 |
| 2008 | 21,578,655 | 45,954,106 |
| 2007 | 20,778,561 | 45,226,803 |
| 2006 | 20,015,279 | 44,397,319 |
| 2005 | 19,291,161 | 43,653,155 |
| 2004 | 18,600,423 | 42,921,895 |
| 2003 | 17,943,712 | 42,187,645 |
| 2002 | 17,327,699 | 41,431,558 |
| 2001 | 16,747,208 | 40,850,412 |
| 2000 | 16,194,869 | 40,567,864 |
| 1999 | 15,667,235 | 40,386,875 |
| 1998 | 15,159,370 | 40,223,509 |
| 1997 | 14,660,413 | 40,057,389 |
| 1996 | 14,170,973 | 39,889,852 |
| 1995 | 13,699,778 | 39,724,050 |
| 1994 | 13,249,764 | 39,549,108 |
| 1993 | 12,827,135 | 39,361,262 |
| 1992 | 12,423,712 | 39,157,685 |
| 1991 | 12,023,529 | 38,966,376 |
| 1990 | 11,626,360 | 38,867,322 |
| 1989 | 11,238,562 | 38,827,764 |
| 1988 | 10,861,291 | 38,766,939 |
| 1987 | 10,497,858 | 38,684,815 |
| 1986 | 10,139,450 | 38,584,624 |
| 1985 | 9,779,120 | 38,469,512 |
| 1984 | 9,425,917 | 38,330,364 |
| 1983 | 9,082,983 | 38,171,525 |
| 1982 | 8,751,648 | 37,986,012 |
| 1981 | 8,435,607 | 37,758,631 |
| 1980 | 8,133,872 | 37,491,165 |
| 1979 | 7,847,207 | 37,191,330 |
| 1978 | 7,576,734 | 36,864,898 |
| 1977 | 7,317,829 | 36,511,638 |
| 1976 | 7,074,664 | 36,137,812 |
| 1975 | 6,842,947 | 35,757,900 |
| 1974 | 6,613,367 | 35,373,335 |
| 1973 | 6,388,528 | 34,988,947 |
| 1972 | 6,174,262 | 34,604,469 |
| 1971 | 5,991,102 | 34,224,490 |
| 1970 | 5,852,788 | 33,814,531 |
| 1969 | 5,763,685 | 33,441,054 |
| 1968 | 5,702,699 | 33,113,134 |
| 1967 | 5,641,807 | 32,682,947 |
| 1966 | 5,581,386 | 32,283,194 |
| 1965 | 5,521,981 | 31,954,292 |
| 1964 | 5,464,187 | 31,609,195 |
| 1963 | 5,408,320 | 31,296,651 |
| 1962 | 5,354,310 | 31,023,366 |
| 1961 | 5,301,583 | 30,739,250 |
| 1960 | 5,231,654 | 30,455,000 |
Data sources: United Nations | World Population Prospects (2026–2100, retrieved 2026-07-08); World Bank | Health (1960–2025, retrieved 2026-07-08).
GeoRank.org/population/angola/spain | CC BY 
From 2006 to 2016, the population of Angola increased by 9,167,791 people (a 45.8% growth), while Spain gained 2,060,820 people (a 4.64% growth).
For the next 10 years, from 2016 to 2026, Angola gained 11,656,320 people (a 39.9% growth), while Spain's population increased by 2,865,519 people (a 6.17% growth).
Angola was ranked 56th most populous country in 2006 and is 39th in 2026. Spain was ranked 28th in 2006 and ranked 32nd now.
The UN's World Population Prospects forecasts that in 24 years (in 2050) Angola's population will grow by 82.7% to 74,607,823 people with a rank change from 39th to 27th. The population of Spain will decrease by 5.93% to 46,397,620 people and rank change from 32nd to 46th.
Angola is projected to reach its peak in 2100 at 152M people, while Spain's population already peaked in 2025 at 49.4M people and is projected to decrease to 34.2M people by 2100.
Population growth rate by year
| Year | Growth rate | |
|---|---|---|
|
Angola
|
Spain
|
|
| 2100 | 0.77% | -0.52% |
| 2099 | 0.81% | -0.51% |
| 2098 | 0.82% | -0.5% |
| 2097 | 0.84% | -0.48% |
| 2096 | 0.87% | -0.48% |
| 2095 | 0.9% | -0.47% |
| 2094 | 0.92% | -0.46% |
| 2093 | 0.94% | -0.46% |
| 2092 | 0.98% | -0.46% |
| 2091 | 1.01% | -0.48% |
| 2090 | 1.04% | -0.48% |
| 2089 | 1.06% | -0.47% |
| 2088 | 1.06% | -0.46% |
| 2087 | 1.1% | -0.46% |
| 2086 | 1.13% | -0.48% |
| 2085 | 1.15% | -0.49% |
| 2084 | 1.16% | -0.5% |
| 2083 | 1.19% | -0.51% |
| 2082 | 1.22% | -0.53% |
| 2081 | 1.27% | -0.55% |
| 2080 | 1.27% | -0.57% |
| 2079 | 1.31% | -0.58% |
| 2078 | 1.34% | -0.61% |
| 2077 | 1.35% | -0.64% |
| 2076 | 1.37% | -0.67% |
| 2075 | 1.42% | -0.7% |
| 2074 | 1.46% | -0.71% |
| 2073 | 1.48% | -0.74% |
| 2072 | 1.51% | -0.74% |
| 2071 | 1.54% | -0.77% |
| 2070 | 1.57% | -0.76% |
| 2069 | 1.59% | -0.79% |
| 2068 | 1.62% | -0.78% |
| 2067 | 1.65% | -0.79% |
| 2066 | 1.68% | -0.78% |
| 2065 | 1.71% | -0.8% |
| 2064 | 1.75% | -0.78% |
| 2063 | 1.77% | -0.79% |
| 2062 | 1.82% | -0.77% |
| 2061 | 1.84% | -0.73% |
| 2060 | 1.88% | -0.72% |
| 2059 | 1.91% | -0.69% |
| 2058 | 1.95% | -0.69% |
| 2057 | 1.97% | -0.68% |
| 2056 | 2.01% | -0.62% |
| 2055 | 2.05% | -0.59% |
| 2054 | 2.07% | -0.58% |
| 2053 | 2.11% | -0.54% |
| 2052 | 2.13% | -0.49% |
| 2051 | 2.17% | -0.47% |
| 2050 | 2.21% | -0.47% |
| 2049 | 2.24% | -0.42% |
| 2048 | 2.26% | -0.4% |
| 2047 | 2.31% | -0.38% |
| 2046 | 2.31% | -0.36% |
| 2045 | 2.36% | -0.33% |
| 2044 | 2.41% | -0.3% |
| 2043 | 2.44% | -0.3% |
| 2042 | 2.48% | -0.28% |
| 2041 | 2.53% | -0.27% |
| 2040 | 2.56% | -0.26% |
| 2039 | 2.61% | -0.24% |
| 2038 | 2.62% | -0.23% |
| 2037 | 2.68% | -0.23% |
| 2036 | 2.7% | -0.22% |
| 2035 | 2.75% | -0.2% |
| 2034 | 2.78% | -0.19% |
| 2033 | 2.8% | -0.19% |
| 2032 | 2.84% | -0.19% |
| 2031 | 2.87% | -0.17% |
| 2030 | 2.91% | -0.14% |
| 2029 | 2.95% | -0.12% |
| 2028 | 2.97% | -0.1% |
| 2027 | 3% | -0.1% |
| 2026 | 3.02% | -0.06% |
| 2025 | 3.05% | 1.04% |
| 2024 | 3.09% | 1.03% |
| 2023 | 3.13% | 1.19% |
| 2022 | 3.19% | 0.72% |
| 2021 | 3.23% | 0.18% |
| 2020 | 3.32% | 0.51% |
| 2019 | 3.45% | 0.72% |
| 2018 | 3.51% | 0.45% |
| 2017 | 3.6% | 0.24% |
| 2016 | 3.64% | 0.08% |
| 2015 | 3.67% | -0.08% |
| 2014 | 3.8% | -0.31% |
| 2013 | 3.93% | -0.36% |
| 2012 | 3.96% | 0.06% |
| 2011 | 3.96% | 0.36% |
| 2010 | 3.93% | 0.46% |
| 2009 | 3.87% | 0.89% |
| 2008 | 3.85% | 1.61% |
| 2007 | 3.81% | 1.87% |
| 2006 | 3.75% | 1.7% |
| 2005 | 3.71% | 1.7% |
| 2004 | 3.66% | 1.74% |
| 2003 | 3.56% | 1.82% |
| 2002 | 3.47% | 1.42% |
| 2001 | 3.41% | 0.7% |
| 2000 | 3.37% | 0.45% |
| 1999 | 3.35% | 0.41% |
| 1998 | 3.4% | 0.41% |
| 1997 | 3.45% | 0.42% |
| 1996 | 3.44% | 0.42% |
| 1995 | 3.4% | 0.44% |
| 1994 | 3.29% | 0.48% |
| 1993 | 3.25% | 0.52% |
| 1992 | 3.33% | 0.49% |
| 1991 | 3.42% | 0.25% |
| 1990 | 3.45% | 0.1% |
| 1989 | 3.47% | 0.16% |
| 1988 | 3.46% | 0.21% |
| 1987 | 3.53% | 0.26% |
| 1986 | 3.68% | 0.3% |
| 1985 | 3.75% | 0.36% |
| 1984 | 3.78% | 0.42% |
| 1983 | 3.79% | 0.49% |
| 1982 | 3.75% | 0.6% |
| 1981 | 3.71% | 0.71% |
| 1980 | 3.65% | 0.81% |
| 1979 | 3.57% | 0.89% |
| 1978 | 3.54% | 0.97% |
| 1977 | 3.44% | 1.03% |
| 1976 | 3.39% | 1.06% |
| 1975 | 3.47% | 1.09% |
| 1974 | 3.52% | 1.1% |
| 1973 | 3.47% | 1.11% |
| 1972 | 3.06% | 1.11% |
| 1971 | 2.36% | 1.21% |
| 1970 | 1.55% | 1.12% |
| 1969 | 1.07% | 0.99% |
| 1968 | 1.08% | 1.32% |
| 1967 | 1.08% | 1.24% |
| 1966 | 1.08% | 1.03% |
| 1965 | 1.06% | 1.09% |
| 1964 | 1.03% | 1% |
| 1963 | 1.01% | 0.88% |
| 1962 | 0.99% | 0.92% |
| 1961 | 1.34% | 0.93% |
Data sources: United Nations | World Population Prospects (2026–2100, retrieved 2026-07-08); World Bank | Health (1961–2025, retrieved 2026-07-08).
GeoRank.org/population/angola/spain | CC BY
In 2025, the population of Angola grew by 3.05%, while Spain's population grew by 1.04%.
Live population counters
|
Angola
|
Spain
|
|
|---|---|---|
| Current population |
40839390
|
49323658
|
| Population rank | 39/197 | 32/197 |
| Percent of world population | 0.49% | 0.59% |
| One net population change |
27.4 seconds
|
1.04 minutes
|
| One birth every |
22.4 seconds
|
1.66 minutes
|
| One death every |
2.03 minutes
|
1.21 minutes
|
| Daily growth/decline | +3,162 | +1,387 |
| Annual growth/decline | +1,154,190 | +506,303 |
| Annual growth/decline rate | +3.05% | +1.04% |
| Population growth rate rank | 12/197 | 98/197 |
| One migration net change every |
2.49 hours
|
5.45 minutes
|
| Annual migration change | -3,524 | +96,630 |
| Net migration rank | 113/196 | 17/196 |
| Foreign-born residents | 676,507 | 8,870,527 |
| Foreign-born residents rank | 72/195 | 6/195 |
| Foreign-born share of population | 1.8% | 18.5% |
| Foreign-born share rank | 134/195 | 32/195 |
Natural population change vs migration
| Year | Population change | |||
|---|---|---|---|---|
|
Angola
|
Spain
|
|||
| Natural | Migration | Natural | Migration | |
| 2025 | - | -3,524 | - | 96,630 |
| 2024 | 1,148,623 | -2,629 | -117,237 | 111,674 |
| 2023 | 1,126,862 | -995 | -116,046 | 119,099 |
| 2022 | 1,104,864 | -995 | -133,801 | 299,779 |
| 2021 | 1,072,267 | 29,094 | -113,865 | 144,385 |
| 2020 | 1,053,677 | 7,556 | -151,551 | 236,854 |
| 2019 | 1,030,776 | 58,984 | -56,542 | 464,783 |
| 2018 | 1,005,547 | 61,632 | -56,139 | 337,467 |
| 2017 | 979,700 | 77,731 | -32,600 | 201,135 |
| 2016 | 954,491 | 91,614 | 0 | 106,474 |
| 2015 | 930,277 | 74,171 | -4,642 | -1,979 |
| 2014 | 905,106 | 84,535 | 32,522 | -97,870 |
| 2013 | 876,208 | 124,478 | 37,284 | -250,741 |
| 2012 | 845,130 | 130,643 | 51,450 | -153,486 |
| 2011 | 813,495 | 128,800 | 84,137 | 60,761 |
| 2010 | 782,310 | 122,418 | 102,469 | 69,406 |
| 2009 | 750,290 | 105,077 | 106,635 | 129,557 |
| 2008 | 716,519 | 100,370 | 133,267 | 434,135 |
| 2007 | 682,742 | 100,563 | 108,545 | 772,317 |
| 2006 | 647,814 | 95,431 | 110,994 | 659,720 |
| 2005 | 617,934 | 87,050 | 78,576 | 629,803 |
| 2004 | 585,950 | 90,553 | 85,844 | 661,158 |
| 2003 | 556,111 | 80,828 | 54,844 | 658,428 |
| 2002 | 512,813 | 82,292 | 53,861 | 737,880 |
| 2001 | 488,432 | 77,458 | 44,936 | 181,307 |
| 2000 | 465,975 | 72,793 | 36,512 | 176,269 |
| 1999 | 446,188 | 70,301 | 8,077 | 178,559 |
| 1998 | 428,722 | 70,527 | 4,022 | 182,926 |
| 1997 | 430,723 | 67,944 | 20,028 | 165,345 |
| 1996 | 418,526 | 61,681 | 11,967 | 162,704 |
| 1995 | 406,610 | 55,568 | 15,889 | 162,434 |
| 1994 | 376,280 | 61,569 | 31,639 | 160,407 |
| 1993 | 354,529 | 52,879 | 47,234 | 160,907 |
| 1992 | 346,125 | 53,310 | 62,652 | 177,544 |
| 1991 | 354,778 | 46,143 | 58,450 | 122,841 |
| 1990 | 328,596 | 64,821 | 66,075 | -30,684 |
| 1989 | 318,602 | 63,586 | 81,538 | -25,892 |
| 1988 | 307,331 | 65,028 | 100,794 | -17,663 |
| 1987 | 291,683 | 62,820 | 116,054 | -12,681 |
| 1986 | 297,320 | 64,974 | 131,188 | -13,540 |
| 1985 | 283,633 | 74,738 | 146,184 | -589 |
| 1984 | 269,506 | 78,529 | 172,487 | 2,754 |
| 1983 | 254,860 | 82,958 | 183,223 | 1,241 |
| 1982 | 248,932 | 75,921 | 231,714 | -7,384 |
| 1981 | 236,340 | 70,910 | 237,879 | 2,563 |
| 1980 | 224,031 | 72,192 | 281,184 | 20,166 |
| 1979 | 212,942 | 64,158 | 312,407 | -5,929 |
| 1978 | 202,655 | 61,200 | 339,157 | -2,504 |
| 1977 | 192,847 | 61,110 | 361,465 | -1,332 |
| 1976 | 184,430 | 47,927 | 375,834 | 2,804 |
| 1975 | 178,409 | 52,662 | 371,882 | -218 |
| 1974 | 174,858 | 53,232 | 396,182 | 105,838 |
| 1973 | 166,926 | 54,650 | 374,381 | 8,624 |
| 1972 | 159,339 | 47,611 | 391,030 | 7,935 |
| 1971 | 154,990 | 4,386 | 369,625 | 7,363 |
| 1970 | 153,706 | -36,456 | 378,723 | -60,580 |
| 1969 | 151,349 | -90,395 | 367,851 | -49,956 |
| 1968 | 148,744 | -87,730 | 387,423 | -46,088 |
| 1967 | 145,936 | -85,173 | 402,001 | -42,344 |
| 1966 | 142,844 | -82,767 | 397,084 | -41,467 |
| 1965 | 139,850 | -81,111 | 405,819 | -42,476 |
| 1964 | 136,824 | -79,977 | 429,885 | -41,461 |
| 1963 | 133,580 | -78,700 | 394,338 | -44,446 |
| 1962 | 130,405 | -77,265 | 384,690 | -45,211 |
| 1961 | 127,085 | -74,774 | 396,537 | -46,517 |
| 1960 | 128,489 | -40,935 | 398,960 | -154,869 |
Data sources: World Bank | Health (1960–2025, retrieved 2026-07-08).
GeoRank.org/population/angola/spain | CC BY
Over the last 10 years, 96.3% of the population change in Angola is from natural causes (a gain of 10,407,084 people) and 3.67% is from migration (a gain of 396,163 people). In Spain 27.9% is from natural causes (a loss of 782,423 people) and 72.1% is from migration (a gain of 2,019,671 people).
As of 2024, 676,507 residents or 1.8% of the population were not native-born in Angola, compared to 8,870,527 people or 18.5% in Spain.
Biggest cities by population
Compare countries by 7 more topics
Population differences between Angola and Spain
|
Angola
|
Spain
|
|
|---|---|---|
| Life expectancy | 65.2 years | 84.1 years |
| Average age | 22.5 years | 45 years |
| Median age | 17.8 years | 46.8 years |
| Male:Female ratio | 49.5:50.5 | 49.1:50.9 |
| Fertility rate | 5.05 births per woman | 1.1 births per woman |
| Population density | 83.6 ppl/mi² | 255.7 ppl/mi² |
Population map with other countries
Data sources: World Bank | Health (1960–2025, retrieved 2026-07-08); United Nations | World Population Prospects (1960–2026, retrieved 2026-07-08); U.S. Census Bureau (1960–2025, retrieved 2026-07-08); Central Intelligence Agency (CIA) (2000–2019, retrieved 2026-07-08).
GeoRank.org/population/angola/spain | CC BY
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:
- World Bank | Health (1960–2025, retrieved 2026-07-08)
- United Nations | World Population Prospects (1960–2100, retrieved 2026-07-08)
- U.S. Census Bureau (1960–2025, retrieved 2026-07-08)
- Central Intelligence Agency (CIA) (2000–2019, retrieved 2026-07-08)
- Wikidata (2026, retrieved 2026-07-08)
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.