Year	current US$
1974	1889999.98569489
1975	8989999.77111816
1976	5960000.03814697
1977	2000000
1978	2349999.90463257
1979	1230000.01907349
1980	7300000.19073486
1981	6289999.96185303
1982	4280000.20980835
1983	6239999.771118159
1984	6659999.84741211
1985	20629999.1607666
1986	14439999.5803833
1987	19750000
1988	20500000
1989	27500000
1990	31780000.6866455
1991	37119998.9318848
1992	16559999.465942401
1993	16520000.4577637
1994	14939999.5803833
1995	31090000.1525879
1996	29639999.3896484
1997	24840000.1525879
1998	18340000.1525879
1999	14340000.1525879
2000	10869999.8855591
2001	13720000.2670288
2002	17170000.0762939
2003	19450000.762939498
2004	25030000.6866455
2005	24940000.5340576
2006	26870000.8392334
2007	48229999.5422363
2008	38419998.1689453
2009	49020000.4577637
2010	144089996.33789098
2011	53520000.4577637
2012	74300003.0517578
2013	50200000.762939505
2014	38979999.5422363
2015	27579999.9237061
2016	38700000.762939505
2017	37310001.373291
2018	41720001.220703095
2019	41049999.237060495
2020	33619998.9318848
2021	70949996.9482422
2022	42810001.373291