Year	current US$
1970	22659994.129
1971	22638212.209
1972	30732321.74
1973	28418270.11
1974	48835701.251
1975	222109242.720739
1976	248793852.60139996
1977	357418043.2027
1978	411297570.09430003
1979	555940080.136955
1980	878786379.3667473
1981	1071196790.147158
1982	1321885468.738058
1983	1532407268.893886
1984	1361742075.6933281
1985	1093022947.741457
1986	989016132.3649701
1987	1416188048.265524
1988	1462145055.129585
1989	1737838422.7867758
1990	1651896839.8253474
1991	1626667942.35962
1992	1816978652.42244
1993	1616569779.5301702
1994	1920518109.8464499
1995	2018399025.2663956
1996	1729240917.2170467
1997	2375641194.213691
1998	2519054550.1513186
1999	2697573266.3411446
2000	2604068623.3318644
2001	1998851126.775858
2002	2342595416.4220867
2003	2880425018.7797546
2004	3711097135.8035865
2005	3400278043.753669
2006	3885941885.7489367
2007	4637984122.542909
2008	5637712569.238382
2009	6529049381.66971
2010	7855160215.3758955
2011	9436898043.35454
2012	9539966159.23928
2013	9473590190.520103
2014	10621779870.331736
2015	10968477849.27847
2016	10180486149.775412
2017	10674896563.074842
2018	14957133777.198536
2019	15012086298.678804
2020	13851671379.89883
2021	17252302654.697254
2022	18359168134.303493