Year	current US$
1970	63992571.4285715
1971	76878571.4285716
1972	85533285.7142856
1973	92098285.7142859
1974	116800000
1975	126654666.666667
1976	134807142.857143
1977	118643750
1978	123927250
1979	130709250
1980	148837500
1981	150555555.555556
1982	206317222.222222
1983	160575230.769231
1984	127951777.777778
1985	88495354.8387097
1986	51512897.4358973
1987	51982673.6842106
1988	85642784.9256505
1989	86191999.9999999
1990	78612814.1026318
1991	83853195.0464396
1992	63064241.3407822
1993	60365207.5971732
1994	61564643.8601733
1995	71301233.6535124
1996	68662810.4511129
1997	82051518.6808935
1998	82874668.3851565
1999	69977323.9934324
2000	62658358.4802118
2001	79250353.3845336
2002	89540727.5666902
2003	114794111.274819
2004	151964443.058026
2005	143222638.212165
2006	169189273.886352
2007	132631802.823235
2008	234423898.754808
2009	265300731.058779
2010	404342233.795488
2011	557291999.801334
2012	716651608.088265
2013	865315382.522332
2014	951322255.168681
2015	820557579.966694
2016	723867179.599003
2017	881228962.538799
2018	923211186.439203
2019	816270183.499782
2020	627298983.248846
2021	720819580.246001