The latest officially reported population of Bulgaria was 6,441,421 in 2024 vs 524,877 people in Cape Verde in 2024. In 2026, based on the adjusted UN estimation, the current Bulgaria's population is 6,359,449 people compared to 530,391 in Cape Verde.
Population statistics:
- Bulgaria's population is 12 times bigger than Cape Verde's.
- Bulgaria is ranked the 112th most populous country in the world, while Cape Verde is the 169th.
- The countries together account for 0.08% of the world: 0.08% for Bulgaria vs 0.006% for Cape Verde.
- For the last 10 years, Bulgaria has had an average growth rate of -0.96% per year vs +0.22% in Cape Verde.
- Since 2006, the population of Bulgaria has decreased from 7.6M people to 6.36M (16.3% decline), while Cape Verde has grown from 491K to 530K (8.08% growth).
Bulgaria vs Cape Verde: population by year and forecast
| Year | Population | |
|---|---|---|
Bulgaria
|
Cape Verde
|
|
| 2100 | 3,368,029 | 420,063 |
| 2099 | 3,392,444 | 424,339 |
| 2098 | 3,416,655 | 428,547 |
| 2097 | 3,440,938 | 432,823 |
| 2096 | 3,465,328 | 437,079 |
| 2095 | 3,489,216 | 441,399 |
| 2094 | 3,513,318 | 445,733 |
| 2093 | 3,537,356 | 450,100 |
| 2092 | 3,561,475 | 454,396 |
| 2091 | 3,585,597 | 458,688 |
| 2090 | 3,609,873 | 462,998 |
| 2089 | 3,634,642 | 467,377 |
| 2088 | 3,659,749 | 471,624 |
| 2087 | 3,685,668 | 475,845 |
| 2086 | 3,712,363 | 480,024 |
| 2085 | 3,739,898 | 484,207 |
| 2084 | 3,768,305 | 488,361 |
| 2083 | 3,797,217 | 492,342 |
| 2082 | 3,827,186 | 496,365 |
| 2081 | 3,857,721 | 500,326 |
| 2080 | 3,890,095 | 504,194 |
| 2079 | 3,923,403 | 507,990 |
| 2078 | 3,957,241 | 511,571 |
| 2077 | 3,992,168 | 515,063 |
| 2076 | 4,027,738 | 518,529 |
| 2075 | 4,064,356 | 521,923 |
| 2074 | 4,102,642 | 525,175 |
| 2073 | 4,141,518 | 528,314 |
| 2072 | 4,180,975 | 531,359 |
| 2071 | 4,221,261 | 534,222 |
| 2070 | 4,262,568 | 537,167 |
| 2069 | 4,304,304 | 540,078 |
| 2068 | 4,346,623 | 542,854 |
| 2067 | 4,389,924 | 545,645 |
| 2066 | 4,433,953 | 548,241 |
| 2065 | 4,478,521 | 550,631 |
| 2064 | 4,523,406 | 552,831 |
| 2063 | 4,568,385 | 554,976 |
| 2062 | 4,613,363 | 557,061 |
| 2061 | 4,658,825 | 558,943 |
| 2060 | 4,704,379 | 560,606 |
| 2059 | 4,749,738 | 562,202 |
| 2058 | 4,794,388 | 563,524 |
| 2057 | 4,839,236 | 564,676 |
| 2056 | 4,884,068 | 565,611 |
| 2055 | 4,929,309 | 566,437 |
| 2054 | 4,974,635 | 567,099 |
| 2053 | 5,020,162 | 567,452 |
| 2052 | 5,065,364 | 567,567 |
| 2051 | 5,110,833 | 567,565 |
| 2050 | 5,156,741 | 567,433 |
| 2049 | 5,202,941 | 567,091 |
| 2048 | 5,249,351 | 566,651 |
| 2047 | 5,296,642 | 566,116 |
| 2046 | 5,343,848 | 565,314 |
| 2045 | 5,391,354 | 564,356 |
| 2044 | 5,439,559 | 563,283 |
| 2043 | 5,488,407 | 562,118 |
| 2042 | 5,537,839 | 560,857 |
| 2041 | 5,588,510 | 559,474 |
| 2040 | 5,639,850 | 557,962 |
| 2039 | 5,692,028 | 556,312 |
| 2038 | 5,743,725 | 554,523 |
| 2037 | 5,796,645 | 552,714 |
| 2036 | 5,849,741 | 550,888 |
| 2035 | 5,902,025 | 548,939 |
| 2034 | 5,954,460 | 547,001 |
| 2033 | 6,007,050 | 545,142 |
| 2032 | 6,058,858 | 543,065 |
| 2031 | 6,111,118 | 541,069 |
| 2030 | 6,163,564 | 538,756 |
| 2029 | 6,214,784 | 536,526 |
| 2028 | 6,264,738 | 534,280 |
| 2027 | 6,313,255 | 532,028 |
| 2026 | 6,359,449 | 529,785 |
| 2025 | 6,402,394 | 527,409 |
| 2024 | 6,441,421 | 524,877 |
| 2023 | 6,446,596 | 522,331 |
| 2022 | 6,465,097 | 519,741 |
| 2021 | 6,507,301 | 516,649 |
| 2020 | 6,550,696 | 514,679 |
| 2019 | 6,616,726 | 514,104 |
| 2018 | 6,710,798 | 513,415 |
| 2017 | 6,803,468 | 512,893 |
| 2016 | 6,894,139 | 512,554 |
| 2015 | 6,984,225 | 512,394 |
| 2014 | 7,073,572 | 512,326 |
| 2013 | 7,160,005 | 512,225 |
| 2012 | 7,305,888 | 511,955 |
| 2011 | 7,348,328 | 511,447 |
| 2010 | 7,395,599 | 509,784 |
| 2009 | 7,444,443 | 506,141 |
| 2008 | 7,492,561 | 501,355 |
| 2007 | 7,545,338 | 496,190 |
| 2006 | 7,601,022 | 490,728 |
| 2005 | 7,658,972 | 485,115 |
| 2004 | 7,716,860 | 479,370 |
| 2003 | 7,775,327 | 473,383 |
| 2002 | 7,837,161 | 467,046 |
| 2001 | 8,009,142 | 460,293 |
| 2000 | 8,170,172 | 453,317 |
| 1999 | 8,210,624 | 446,519 |
| 1998 | 8,256,786 | 439,784 |
| 1997 | 8,312,068 | 432,798 |
| 1996 | 8,362,826 | 425,581 |
| 1995 | 8,406,067 | 418,104 |
| 1994 | 8,443,591 | 410,228 |
| 1993 | 8,472,313 | 401,965 |
| 1992 | 8,540,164 | 393,415 |
| 1991 | 8,632,367 | 384,586 |
| 1990 | 8,718,289 | 375,428 |
| 1989 | 8,876,972 | 367,803 |
| 1988 | 8,981,446 | 362,329 |
| 1987 | 8,971,359 | 357,302 |
| 1986 | 8,958,171 | 352,312 |
| 1985 | 8,960,547 | 347,365 |
| 1984 | 8,960,679 | 342,505 |
| 1983 | 8,939,738 | 337,654 |
| 1982 | 8,917,457 | 332,724 |
| 1981 | 8,891,117 | 327,846 |
| 1980 | 8,861,535 | 323,301 |
| 1979 | 8,825,940 | 319,480 |
| 1978 | 8,814,032 | 316,147 |
| 1977 | 8,804,183 | 312,834 |
| 1976 | 8,758,599 | 309,455 |
| 1975 | 8,720,742 | 305,847 |
| 1974 | 8,678,745 | 302,570 |
| 1973 | 8,620,967 | 299,881 |
| 1972 | 8,576,200 | 297,386 |
| 1971 | 8,536,395 | 294,046 |
| 1970 | 8,489,574 | 287,885 |
| 1969 | 8,434,172 | 279,248 |
| 1968 | 8,369,603 | 270,164 |
| 1967 | 8,310,226 | 261,404 |
| 1966 | 8,258,057 | 252,976 |
| 1965 | 8,204,168 | 244,856 |
| 1964 | 8,144,340 | 237,006 |
| 1963 | 8,078,145 | 229,373 |
| 1962 | 8,012,946 | 221,919 |
| 1961 | 7,943,118 | 215,087 |
| 1960 | 7,867,374 | 210,024 |
Data sources: United Nations | World Population Prospects (2025–2100, retrieved 2026-03-10); World Bank | Health (1960–2024, retrieved 2026-04-06).
GeoRank.org/population/bulgaria/cape-verde | CC BY 
From 2006 to 2016, the population of Bulgaria decreased by 706,883 people (a 9.3% decline), while Cape Verde gained 21,826 people (a 4.45% growth).
For the next 10 years, from 2016 to 2026, Bulgaria lost 534,690 people (a 7.76% decline), while Cape Verde's population increased by 17,837 people (a 3.48% growth).
Bulgaria was ranked 95th most populous country in 2006 and is 112th in 2026. Cape Verde was ranked 166th in 2006 and ranked 169th now.
The UN's World Population Prospects forecasts that in 24 years (in 2050) Bulgaria's population will shrink by 18.9% to 5,156,741 people with a rank change from 112th to 128th. The population of Cape Verde will increase by 6.98% to 567,433 people and rank change from 169th to 168th.
Cape Verde is projected to reach its peak in 2052 at 568K people, while Bulgaria's population already peaked in 1988 at 8.98M people and is projected to decrease to 3.37M people by 2100.
Population growth rate by year
| Year | Growth rate | |
|---|---|---|
|
Bulgaria
|
Cape Verde
|
|
| 2100 | -0.72% | -1.01% |
| 2099 | -0.71% | -0.98% |
| 2098 | -0.71% | -0.99% |
| 2097 | -0.7% | -0.97% |
| 2096 | -0.68% | -0.98% |
| 2095 | -0.69% | -0.97% |
| 2094 | -0.68% | -0.97% |
| 2093 | -0.68% | -0.95% |
| 2092 | -0.67% | -0.94% |
| 2091 | -0.67% | -0.93% |
| 2090 | -0.68% | -0.94% |
| 2089 | -0.69% | -0.9% |
| 2088 | -0.7% | -0.89% |
| 2087 | -0.72% | -0.87% |
| 2086 | -0.74% | -0.86% |
| 2085 | -0.75% | -0.85% |
| 2084 | -0.76% | -0.81% |
| 2083 | -0.78% | -0.81% |
| 2082 | -0.79% | -0.79% |
| 2081 | -0.83% | -0.77% |
| 2080 | -0.85% | -0.75% |
| 2079 | -0.86% | -0.7% |
| 2078 | -0.87% | -0.68% |
| 2077 | -0.88% | -0.67% |
| 2076 | -0.9% | -0.65% |
| 2075 | -0.93% | -0.62% |
| 2074 | -0.94% | -0.59% |
| 2073 | -0.94% | -0.57% |
| 2072 | -0.95% | -0.54% |
| 2071 | -0.97% | -0.55% |
| 2070 | -0.97% | -0.54% |
| 2069 | -0.97% | -0.51% |
| 2068 | -0.99% | -0.51% |
| 2067 | -0.99% | -0.47% |
| 2066 | -1% | -0.43% |
| 2065 | -0.99% | -0.4% |
| 2064 | -0.98% | -0.39% |
| 2063 | -0.97% | -0.37% |
| 2062 | -0.98% | -0.34% |
| 2061 | -0.97% | -0.3% |
| 2060 | -0.95% | -0.28% |
| 2059 | -0.93% | -0.23% |
| 2058 | -0.93% | -0.2% |
| 2057 | -0.92% | -0.17% |
| 2056 | -0.92% | -0.15% |
| 2055 | -0.91% | -0.12% |
| 2054 | -0.91% | -0.06% |
| 2053 | -0.89% | -0.02% |
| 2052 | -0.89% | 0% |
| 2051 | -0.89% | 0.02% |
| 2050 | -0.89% | 0.06% |
| 2049 | -0.88% | 0.08% |
| 2048 | -0.89% | 0.09% |
| 2047 | -0.88% | 0.14% |
| 2046 | -0.88% | 0.17% |
| 2045 | -0.89% | 0.19% |
| 2044 | -0.89% | 0.21% |
| 2043 | -0.89% | 0.22% |
| 2042 | -0.91% | 0.25% |
| 2041 | -0.91% | 0.27% |
| 2040 | -0.92% | 0.3% |
| 2039 | -0.9% | 0.32% |
| 2038 | -0.91% | 0.33% |
| 2037 | -0.91% | 0.33% |
| 2036 | -0.89% | 0.35% |
| 2035 | -0.88% | 0.35% |
| 2034 | -0.88% | 0.34% |
| 2033 | -0.86% | 0.38% |
| 2032 | -0.86% | 0.37% |
| 2031 | -0.85% | 0.43% |
| 2030 | -0.82% | 0.42% |
| 2029 | -0.8% | 0.42% |
| 2028 | -0.77% | 0.42% |
| 2027 | -0.73% | 0.42% |
| 2026 | -0.67% | 0.45% |
| 2025 | -0.61% | 0.48% |
| 2024 | -0.08% | 0.49% |
| 2023 | -0.29% | 0.5% |
| 2022 | -0.65% | 0.6% |
| 2021 | -0.66% | 0.38% |
| 2020 | -1% | 0.11% |
| 2019 | -1.4% | 0.13% |
| 2018 | -1.36% | 0.1% |
| 2017 | -1.32% | 0.07% |
| 2016 | -1.29% | 0.03% |
| 2015 | -1.26% | 0.01% |
| 2014 | -1.21% | 0.02% |
| 2013 | -2% | 0.05% |
| 2012 | -0.58% | 0.1% |
| 2011 | -0.64% | 0.33% |
| 2010 | -0.66% | 0.72% |
| 2009 | -0.64% | 0.95% |
| 2008 | -0.7% | 1.04% |
| 2007 | -0.73% | 1.11% |
| 2006 | -0.76% | 1.16% |
| 2005 | -0.75% | 1.2% |
| 2004 | -0.75% | 1.26% |
| 2003 | -0.79% | 1.36% |
| 2002 | -2.15% | 1.47% |
| 2001 | -1.97% | 1.54% |
| 2000 | -0.49% | 1.52% |
| 1999 | -0.56% | 1.53% |
| 1998 | -0.67% | 1.61% |
| 1997 | -0.61% | 1.7% |
| 1996 | -0.51% | 1.79% |
| 1995 | -0.44% | 1.92% |
| 1994 | -0.34% | 2.06% |
| 1993 | -0.79% | 2.17% |
| 1992 | -1.07% | 2.3% |
| 1991 | -0.99% | 2.44% |
| 1990 | -1.79% | 2.07% |
| 1989 | -1.16% | 1.51% |
| 1988 | 0.11% | 1.41% |
| 1987 | 0.15% | 1.42% |
| 1986 | -0.03% | 1.42% |
| 1985 | -0.001% | 1.42% |
| 1984 | 0.23% | 1.44% |
| 1983 | 0.25% | 1.48% |
| 1982 | 0.3% | 1.49% |
| 1981 | 0.33% | 1.41% |
| 1980 | 0.4% | 1.2% |
| 1979 | 0.14% | 1.05% |
| 1978 | 0.11% | 1.06% |
| 1977 | 0.52% | 1.09% |
| 1976 | 0.43% | 1.18% |
| 1975 | 0.48% | 1.08% |
| 1974 | 0.67% | 0.9% |
| 1973 | 0.52% | 0.84% |
| 1972 | 0.47% | 1.14% |
| 1971 | 0.55% | 2.14% |
| 1970 | 0.66% | 3.09% |
| 1969 | 0.77% | 3.36% |
| 1968 | 0.71% | 3.35% |
| 1967 | 0.63% | 3.33% |
| 1966 | 0.66% | 3.32% |
| 1965 | 0.73% | 3.31% |
| 1964 | 0.82% | 3.33% |
| 1963 | 0.81% | 3.36% |
| 1962 | 0.88% | 3.18% |
| 1961 | 0.96% | 2.41% |
Data sources: United Nations | World Population Prospects (2025–2100, retrieved 2026-03-10); World Bank | Health (1961–2024, retrieved 2026-04-06).
GeoRank.org/population/bulgaria/cape-verde | CC BY
In 2024, the population of Bulgaria declined by 0.08%, while Cape Verde's population grew by 0.49%.
Live population counters
|
Bulgaria
|
Cape Verde
|
|
|---|---|---|
| Current population |
6359449
|
530391
|
| Population rank | 112/197 | 169/197 |
| Percent of world population | 0.08% | 0.006% |
| One net population change |
1.69 hours
|
3.44 hours
|
| One birth every |
9.16 minutes
|
1.36 hours
|
| One death every |
5.19 minutes
|
3.32 hours
|
| Daily growth/decline | -14 | +7 |
| Annual growth/decline | -5,175 | +2,546 |
| Annual growth/decline rate | -0.08% | +0.49% |
| Population growth rate rank | 171/197 | 136/197 |
| One migration net change every |
2.97 hours
|
6.84 hours
|
| Annual migration change | -2,961 | -1,284 |
| Net migration rank | 106/196 | 94/196 |
| Foreign-born residents | 299,100 | 16,515 |
| Foreign-born residents rank | 98/195 | 171/195 |
| Foreign-born share of population | 4.4% | 3.1% |
| Foreign-born share rank | 99/195 | 116/195 |
Natural population change vs migration
| Year | Population change | |||
|---|---|---|---|---|
|
Bulgaria
|
Cape Verde
|
|||
| Natural | Migration | Natural | Migration | |
| 2025 | - | -2,961 | - | -1,284 |
| 2024 | - | 524 | - | -1,209 |
| 2023 | -43,837 | 5,173 | 3,798 | -1,226 |
| 2022 | -62,065 | 26,498 | 3,864 | -1,253 |
| 2021 | -90,452 | 11,756 | 3,575 | 0 |
| 2020 | -65,507 | 30,167 | 3,734 | -3,362 |
| 2019 | -46,317 | -2,156 | 4,773 | -4,001 |
| 2018 | -46,304 | -3,873 | 5,282 | -4,679 |
| 2017 | -45,583 | -6,109 | 5,993 | -5,550 |
| 2016 | -42,744 | -9,482 | 6,238 | -6,004 |
| 2015 | -44,699 | -4,227 | 6,314 | -6,226 |
| 2014 | -41,027 | -2,180 | 6,622 | -6,578 |
| 2013 | -37,948 | -1,324 | 6,780 | -6,622 |
| 2012 | -40,183 | -26,334 | 7,157 | -6,779 |
| 2011 | -37,477 | -23,360 | 7,874 | -7,226 |
| 2010 | -34,759 | -21,668 | 7,746 | -5,069 |
| 2009 | -26,800 | -19,060 | 7,216 | -2,618 |
| 2008 | -32,967 | -17,595 | 7,313 | -2,340 |
| 2007 | -37,727 | -16,366 | 7,559 | -2,200 |
| 2006 | -39,526 | -15,184 | 7,980 | -2,408 |
| 2005 | -42,124 | -14,435 | 8,428 | -2,768 |
| 2004 | -40,128 | -13,604 | 8,825 | -2,993 |
| 2003 | -44,319 | -13,183 | 9,037 | -2,898 |
| 2002 | -46,240 | -12,735 | 9,278 | -2,751 |
| 2001 | -44,050 | -30,726 | 9,510 | -2,528 |
| 2000 | -41,668 | -26,211 | 9,752 | -2,772 |
| 1999 | -39,411 | -23,846 | 9,989 | -3,371 |
| 1998 | -52,844 | -23,262 | 10,187 | -3,332 |
| 1997 | -58,185 | -22,963 | 10,323 | -3,211 |
| 1996 | -45,159 | -21,520 | 10,613 | -3,297 |
| 1995 | -42,030 | -22,020 | 10,764 | -3,125 |
| 1994 | -32,086 | -20,984 | 11,410 | -3,299 |
| 1993 | -24,569 | -19,973 | 11,805 | -3,393 |
| 1992 | -18,789 | -120,552 | 11,915 | -3,231 |
| 1991 | -14,675 | -119,356 | 11,899 | -2,924 |
| 1990 | -3,487 | -116,817 | 11,738 | -2,398 |
| 1989 | 5,326 | -114,705 | 11,608 | -5,704 |
| 1988 | 9,879 | 215 | 11,523 | -6,474 |
| 1987 | 8,971 | 357 | 11,426 | -6,418 |
| 1986 | 16,125 | 1,104 | 11,295 | -6,314 |
| 1985 | 11,649 | -19,230 | 11,105 | -6,192 |
| 1984 | 20,610 | -1,032 | 10,835 | -6,035 |
| 1983 | 21,455 | -1,872 | 10,736 | -5,834 |
| 1982 | 24,077 | -1,860 | 10,597 | -5,629 |
| 1981 | 29,341 | -1,830 | 10,470 | -5,684 |
| 1980 | 30,129 | -2,045 | 10,276 | -5,980 |
| 1979 | 40,599 | -872 | 10,223 | -6,875 |
| 1978 | 44,070 | -62,769 | 10,152 | -6,833 |
| 1977 | 47,543 | -11,955 | 10,036 | -6,730 |
| 1976 | 56,055 | -2,522 | 9,833 | -6,389 |
| 1975 | 54,941 | -38,071 | 9,601 | -5,829 |
| 1974 | 64,223 | -1,402 | 9,295 | -6,512 |
| 1973 | 57,760 | -5,409 | 9,003 | -6,410 |
| 1972 | 47,169 | -11,296 | 8,716 | -6,316 |
| 1971 | 52,925 | -7,654 | 8,359 | -4,085 |
| 1970 | 61,125 | -11,315 | 7,878 | 172 |
| 1969 | 63,256 | -3,204 | 7,625 | 1,608 |
| 1968 | 69,468 | -132 | 7,408 | 1,521 |
| 1967 | 49,861 | -420 | 7,214 | 1,376 |
| 1966 | 54,504 | -144 | 7,039 | 1,230 |
| 1965 | 58,249 | -1,406 | 6,877 | 1,093 |
| 1964 | 66,783 | 505 | 6,725 | 1,006 |
| 1963 | 66,241 | 500 | 6,589 | 945 |
| 1962 | 64,104 | 499 | 6,468 | 904 |
| 1961 | 75,460 | 378 | 6,247 | 49 |
| 1960 | 76,314 | -1,112 | 6,098 | -2,267 |
Data sources: World Bank | Health (1960–2025, retrieved 2026-04-06).
GeoRank.org/population/bulgaria/cape-verde | CC BY
Over the last 10 years, 92.1% of the population change in Bulgaria is from natural causes (a loss of 528,535 people) and 7.94% is from migration (a gain of 45,567 people). In Cape Verde 56.4% is from natural causes (a gain of 50,193 people) and 43.6% is from migration (a loss of 38,879 people).
As of 2024, 299,100 residents or 4.4% of the population were not native-born in Bulgaria, compared to 16,515 people or 3.1% in Cape Verde.
Biggest cities by population
|
Bulgaria
|
|
|---|---|
| City | Population |
| Sofia | 1.21M |
| Plovdiv | 329K |
| Varna | 319K |
| Burgas | 189K |
| Stara Zagora | 121K |
| Ruse | 121K |
| Pleven | 88.6K |
| Sliven | 78.2K |
| Dobrich | 69.4K |
| Shumen | 66.6K |
|
Cape Verde
|
|
|---|---|
| City | Population |
| Praia | 159K |
| Mindelo | 70.5K |
| Assomada | 12K |
Compare countries by 7 more topics
Population differences between Bulgaria and Cape Verde
|
Bulgaria
|
Cape Verde
|
|
|---|---|---|
| Life expectancy | 76.1 years | 76.6 years |
| Average age | 44.1 years | 31.4 years |
| Median age | 45.5 years | 29.4 years |
| Male:Female ratio | 48.4:51.6 | 50.9:49.1 |
| Fertility rate | 1.81 births per woman | 1.52 births per woman |
| Population density | 151.7 ppl/mi² | 340 ppl/mi² |
Population map with other countries
Data sources: World Bank | Health (1960–2024, retrieved 2026-04-06); United Nations | World Population Prospects (1960–2026, retrieved 2026-03-10); U.S. Census Bureau (1960–2025, retrieved 2026-02-08); Central Intelligence Agency (CIA) (2000–2019, retrieved 2026-02-20).
GeoRank.org/population/bulgaria/cape-verde | 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 2026-04-06)
- United Nations | World Population Prospects (1960–2100, retrieved 2026-03-10)
- U.S. Census Bureau (1960–2025, retrieved 2026-02-08)
- Central Intelligence Agency (CIA) (2000–2019, retrieved 2026-02-20)
- Wikidata (2026, retrieved 2026-02-08)
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.