Year	current US$
1965	219999.998807907
1966	119999.997317791
1967	270000.010728836
1968	730000.019073486
1969	1139999.98569489
1970	1379999.99523163
1971	3289999.96185303
1972	5510000.228881841
1973	4159999.8474121103
1974	5139999.8664856
1975	8979999.54223633
1976	9520000.45776367
1977	12109999.6566772
1978	14619999.8855591
1979	16840000.1525879
1980	18129999.1607666
1981	15850000.3814697
1982	21219999.3133545
1983	16489999.7711182
1984	19579999.9237061
1985	24559999.4659424
1986	25940000.5340576
1987	27069999.6948242
1988	35419998.1689453
1989	33939998.626709
1990	36770000.4577637
1991	32169998.168945298
1992	18790000.915527303
1993	18920000.0762939
1994	21420000.0762939
1995	21469999.3133545
1996	20000000
1997	16530000.6866455
1998	10550000.1907349
1999	11560000.4196167
2000	8420000.07629395
2001	12300000.1907349
2002	9670000.07629395
2003	12619999.8855591
2004	25809999.4659424
2005	32689998.626709
2006	43659999.8474121
2007	46900001.5258789
2008	59310001.373291
2009	59790000.9155273
2010	64639999.38964839
2011	71269996.6430664
2012	55979999.5422363
2013	48180000.3051758
2014	49490001.6784668
2015	55369998.9318848
2016	46819999.6948242
2017	35180000.3051758
2018	38700000.762939505
2019	41880001.0681152
2020	60299999.237060495
2021	52689998.626709
2022	53540000.9155273