Year	current US$
1970	57430303.7990003
1971	65555043.7736834
1972	73296587.668404
1973	86798506.6666666
1974	116813868.316107
1975	130740120.645082
1976	144734238.603298
1977	143941152.663105
1978	157490530.45831
1979	194506728.23219
1980	259579738.802539
1981	307276433.775452
1982	366570549.533772
1983	518688785.046729
1984	641423866.594982
1985	664744331.746426
1986	632154902.049908
1987	631517865.343989
1988	775794871.794871
1989	820434582.738224
1990	930304876.172896
1991	1164262691.75109
1992	1617003007.98036
1993	1423774229.48385
1994	1697091004.32107
1995	1945812614.64654
1996	2103290496.4539
1997	2311379774.76563
1998	2159875730.14645
1999	2043160765.13321
2000	2100717981.43852
2001	2319057208.23799
2002	2356806763.09617
2003	2468588608.81972
2004	2805377110.06305
2005	3128093823.60008
2006	3749251193.5481
2007	4565635978.27427
2008	4830090981.69481
2009	5301552313.50981
2010	6974219053.90539
2011	7607013897.28096
2012	8120602128.51083
2013	8031866890.43395
2014	8387603188.38292
2015	7920872766.94792
2016	8260437263.84364
2017	8756259396.04605
2018	9140447597.86477
2019	9067463890.92507
2020	8254220395.7382
2021	9636648366.20767