Year	current US$
1970	494877044.141242
1971	366335132.129952
1972	349713155.500844
1973	659163797.64017
1974	922878867.323629
1975	428307907.045481
1976	616706517.422457
1977	565067698.441689
1978	542557679.52876
1979	920092716.538838
1980	1081004012.03828
1981	762156649.346789
1982	685652470.130382
1983	797168905.471356
1984	653412783.162525
1985	714512297.866204
1986	632562313.027162
1987	938685639.54182
1988	1630193919.90424
1989	2039510044.92032
1990	1809840091.9446
1991	993420222.028566
1992	921698667.477196
1993	605723570.106063
1994	1155321476.73896
1995	2235653614.73924
1996	1996876043.33321
1997	2151242458.4301
1998	992070646.929207
1999	1511947937.96254
2000	2337508911.12088
2001	1275714989.0157
2002	1094605059.21199
2003	1979424309.75089
2004	5654911742.75148
2005	6859500605.97056
2006	15871430501.0308
2007	17253510376.1978
2008	13703621507.2318
2009	8427071466.60488
2010	13072128319.9198
2011	14889680655.5054
2012	11806216448.0426
2013	10060131767.444
2014	8401486300.88459
2015	4209928666.79474
2016	3452501544.88837
2017	6987481282.12657
2018	8867050319.01364
2019	2699971544.13794
2020	6322472448.95446
2021	28087538553.6073