Year	constant 2015 US$
1970	89868469037.82307
1971	99933616282.82092
1972	113422176127.49121
1973	139059446131.35254
1974	227140778249.3993
1975	326177808889.14215
1976	319540217717.2007
1977	367984634720.1309
1978	278606034863.9519
1979	229900267470.7165
1980	234254628107.19095
1981	236071060470.3207
1982	215386429707.88287
1983	269354092613.3647
1984	217827790820.57104
1985	213873420685.49902
1986	186132500970.1322
1987	187237719903.77652
1988	173171936381.78394
1989	199073638680.44617
1990	235755549069.2028
1991	285980501266.65906
1992	277181593783.7215
1993	248773571252.28607
1994	193547795772.18405
1995	202759663838.78076
1996	215476884675.35306
1997	212580100435.2179
1998	222735774034.63132
1999	220331876843.34744
2000	237896902691.1122
2001	265462029414.14102
2002	295170053168.6727
2003	328564680862.06274
2004	364545734521.9526
2005	382039642625.7808
2006	401145059116.5455
2007	447200588806.3031
2008	508127675405.51044
2009	490514825317.7319
2010	518569940007.11896
2011	487805859173.8196
2012	488701441169.1011
2013	472083184718.14703
2014	470866417524.8081
2015	429336106260.4394
2016	421678334401.7318
2017	476099184532.8356
2018	473970224605.5688
2019	461529660990.3641
2020	362265799939.1695
2021	394316699304.9744
2022	432195335297.5066
2023	452735466827.91