Year	current US$
1970	6490085414.89238
1971	6714539805.79155
1972	7620194424.23248
1973	9555473739.29618
1974	9469022475.10099
1975	12652328385.1577
1976	11415124549.0818
1977	8302899589.33285
1978	8415884469.3729
1979	10667220514.3986
1980	12946594999.8743
1981	9301436358.69537
1982	6501894460.0773
1983	7871301264.04261
1984	11153858203.8702
1985	11328388597.2608
1986	15908273554.8004
1987	19663036322.5852
1988	23388238176.9783
1989	25552460852.5308
1990	27439040741.1594
1991	20457229536.0873
1992	12232853070.9835
1993	3506707649.66301
1994	13494203252.2705
1995	24492245668.259
1996	25515894599.1597
1997	24239973251.064
1998	26810248945.7969
1999	28876322492.0461
2000	29583895206.4288
2001	26802531247.4683
2002	26842522543.5231
2003	39485788484.2118
2004	46619302093.5915
2005	49279461956.7352
2006	65640710586.5183
2007	83415075350.3096
2008	81379936880.7807
2009	42223195604.916
2010	60872891330.4003
2011	71654168222.1939
2012	59220520381.3784
2013	61052196992.2686
2014	62120195336.3323
2015	55066794241.941
2016	54287909383.5751
2017	63629173907.7671
2018	64503623172.7176
2019	71258765112.1807
2020	73200807161.982
2021	88160090893.1879