Year	current US$
1970	709999.9971687791
1971	530000.0086426737
1972	959999.9934434886
1973	1439999.9715387817
1974	2170000.0371783967
1975	4489999.949932103
1976	8140000.093728298
1977	19029999.79071319
1978	18329999.80449676
1979	20260000.184178345
1980	9919999.854639163
1981	6079999.968409536
1982	7400000.050663952
1983	9149999.97615813
1984	8720000.069588423
1985	13270000.012591477
1986	20170000.13962388
1987	16650000.076740976
1988	23429999.81157479
1989	23540000.09782616
1990	23820000.227540717
1991	40119999.922811985
1992	64159999.82878563
1993	28120000.168681137
1994	15499999.878928076
1995	34199999.90239744
1996	42020000.51550561
1997	27009999.915957455
1998	23570000.346750025
1999	25329999.750480056
2000	25920000.346377492
2001	28040000.054985277
2002	36349999.422207445
2003	38819999.34464693
2004	45320000.78074641
2005	50899999.508634195
2006	50449999.855831236
2007	66460000.082850456
2008	73290000.00469384
2009	51079999.68901278
2010	69289999.77186318
2011	84030000.7350744
2012	90679998.97897242
2013	99669999.4429945
2014	114229999.65399523
2015	107359999.23571938
2016	86110000.16704188
2017	119339998.75932929
2018	103039999.62657684
2019	95029998.45147134