Year	current US$
1970	32453219.7588672
1971	33069521.5468939
1972	27097885.7343939
1973	35908557.7733842
1974	28270999.9347993
1975	46773674.2549074
1976	39819805.2628569
1977	83742352.6159
1978	91045860.0616034
1979	99737204.48062
1980	120184374.48316
1981	105326267.25707
1982	138516613.321735
1983	102870957.452731
1984	95384379.6950931
1985	79385847.5139299
1986	121768753.459728
1987	123657993.470287
1988	135555990.467158
1989	143660044.208117
1990	201871027.00484
1991	201768808.970825
1992	211932422.720275
1993	173424727.450203
1994	191393372.092129
1995	296320251.346345
1996	300713235.913817
1997	255066649.705383
1998	251537675.958039
1999	150192935.230614
2000	151983715.345943
2001	151587317.734113
2002	187595644.51704
2003	332552567.118731
2004	311964347.586769
2005	320220384.159902
2006	359569628.993494
2007	548488967.457895
2008	622654425.07913
2009	661385429.527214
2010	567764567.799748
2011	644007625.173838
2012	741157811.720146
2013	774431747.736294
2014	888152166.621932
2015	967443211.399848
2016	1032527210.35827
2017	994047920.759556
2018	646768232.42687
2019	650871222.307531
2020	732188248.610293
2021	788374626.825512