Year	current US$
1970	9079154.76870358
1971	10743945.0026441
1972	10322906.1553986
1973	12274116.6803616
1974	13728932.9685362
1975	16987282.9131653
1976	20262966.9156884
1977	22583767.5350702
1978	25991314.5082765
1979	28377100.8403362
1980	37389740.7762996
1981	38366182.5726141
1982	36958182.7437006
1983	40037594.5097127
1984	43495002.0824656
1985	50277368.5690188
1986	50284966.6582258
1987	47762822.4582701
1988	58473278.2852864
1989	64603552.5639963
1990	66758480.6243195
1991	77341585.3361701
1992	35414510.1162993
1993	22675035.1032132
1994	21450057.7533404
1995	50958673.1893234
1996	57603061.3754341
1997	58138045.0977266
1998	74562451.5625846
1999	59564142.4134428
2000	42228562.4779361
2001	70487796.5722942
2002	87842247.6137345
2003	81955507.1967741
2004	150138252.949396
2005	197262959.304607
2006	242939332.805774
2007	267649862.85842
2008	390802303.502679
2009	428993827.707917
2010	494725754.963163
2011	552854285.594696
2012	615689679.582577
2013	653399030.296897
2014	607586935.486514
2015	525252563.713378
2016	680499968.903635
2017	806084629.470689
2018	812264621.054173
2019	775857547.238134
2020	779778748.328265
2021	1152397183.93643