Year	constant 2015 US$
1975	1664259991.418056
1976	1377188420.0779245
1977	1353610800.36962
1978	1400566682.2692745
1979	1374681281.3430948
1980	1402853984.3525393
1981	1409193142.6938965
1982	1350356220.1262898
1983	1273126880.171157
1984	1328522458.7859118
1985	1385690175.5232122
1986	1416308994.9240825
1987	1497269252.6464405
1988	1468928398.1265693
1989	1410865779.0957026
1990	1389210476.398078
1991	1485660921.275728
1992	1637857838.90242
1993	1648754716.5248363
1994	1652207157.73549
1995	1697138639.566415
1996	1792091125.6242602
1997	1769016306.488178
1998	1672131025.7242515
1999	1797221171.9866796
2000	1754293682.911439
2001	1790284808.7892299
2002	1855158566.294846
2003	1897087822.210421
2004	1929514892.341215
2005	1756469522.3543303
2006	1781073616.7562802
2007	1772966326.8605247
2008	1775134620.1228082
2009	1936977928.0444994
2010	1939856007.0846503
2011	1969698391.8980947
2012	2114894668.3498824
2013	2097019586.5537508
2014	2217209551.6921477
2015	2272567850.601663
2016	2137604272.1124816
2017	2222515596.347595
2018	2243271901.398974
2019	2141954623.4354558
2020	2158810106.826122
2021	2024434566.36711
2022	2129100252.0064282