Year	current US$
1970	22136345.1993598
1971	23557101.2465004
1972	26728678.3784786
1973	28319725.2712751
1974	28995030.1534692
1975	35317776.2324744
1976	35076215.2652547
1977	40578192.8625719
1978	40607998.9087983
1979	52607453.7053426
1980	57025136.9741321
1981	77760447.6392134
1982	88938797.4381258
1983	98021201.5570924
1984	106515132.08271
1985	117751401.211424
1986	141603273.522073
1987	146706049.894936
1988	156764534.426656
1989	162197611.679344
1990	181685830.809892
1991	162975898.153406
1992	167035947.114604
1993	176367854.739068
1994	208148033.203065
1995	208389052.035096
1996	183844476.748928
1997	347802773.200758
1998	374503043.099561
1999	467361941.72635
2000	529134099.771811
2001	535812157.109336
2002	571840847.827253
2003	587190253.623754
2004	607431532.923578
2005	642591438.272039
2006	707603164.360543
2007	713540077.721116
2008	746439175.033677
2009	720067949.089562
2010	738878355.51186
2011	726102741.067551
2012	717005045.367459
2013	749373385.133781
2014	854835415.42678
2015	1090047899.97215
2016	1013875179.31929
2017	917142614.418981
2018	913845422.62164
2019	878978119.310844
2020	584659828.216184
2021	604469033.819739