Year	current US$
1974	114330977.7499126
1975	153233892.8161289
1976	149445181.5617059
1977	166721150.50464422
1978	182268698.704997
1979	248446744.49212748
1980	294018036.3313872
1981	328118070.849699
1982	266854325.746278
1983	252633378.204763
1984	244463601.00116798
1985	243799309.29296303
1986	290927757.701787
1987	315069817.93951
1988	318786529.51616204
1989	271905151.49368197
1990	368134273.81872594
1991	358410222.65966904
1992	403223672.578255
1993	353012746.869661
1994	332904244.95008194
1995	404669211.638337
1996	381431087.90638334
1997	386374565.26236403
1998	433737147.7315481
1999	418466535.2040131
2000	396752795.11476797
2001	403413340.48279256
2002	471324442.8844821
2003	569086850.7180644
2004	687092486.8162372
2005	781666122.7123593
2006	809167812.3270087
2007	1215585065.4486043
2008	1393946058.8451324
2009	1112050422.2325625
2010	1076750562.1557586
2011	1243462512.1845832
2012	1297833108.8908303
2013	1410443329.6924546
2014	1416624033.0581748
2015	1276929571.2112296
2016	1294417029.6436043
2017	1467402558.576611
2018	1643267116.3880384
2019	1808039895.288137
2020	2589757548.5118594
2021	3723465396.890334