Year	current US$
1970	99819592.8318391
1971	75859506.3235793
1972	72447501.2798637
1973	164881504.720552
1974	275855719.067574
1975	154757640.841075
1976	253915256.6372
1977	300037512.929189
1978	205313213.042682
1979	362453552.467335
1980	434139075.677428
1981	644381102.89751
1982	522230974.230922
1983	584905809.330175
1984	467941854.1703
1985	444135365.690071
1986	362266060.636461
1987	570396847.969494
1988	2104204317.5533
1989	968624344.907393
1990	894781576.499046
1991	1331670911.06151
1992	1353213893.9074
1993	988116481.099439
1994	1480934141.06518
1995	1522384038.77036
1996	750851018.030915
1997	821535214.488199
1998	1295854545.01591
1999	1143689534.75341
2000	697612699.306043
2001	569315083.462558
2002	897802853.296835
2003	1202207360.21821
2004	3094069141.75819
2005	8693921970.76447
2006	20929943004.6815
2007	49350787995.0298
2008	67719438524.1781
2009	31535291386.3575
2010	85936608809.8186
2011	130194187918.969
2012	41396805913.3269
2013	34965037969.298
2014	25106825047.2161
2015	16961960400.3328
2016	15002261442.921
2017	17152086497.1154
2018	17992721883.637
2019	23862409382.8793
2020	16498443074.5727
2021	56606890821.586