Year	current US$
1960	33000000
1961	51000000
1962	30000000
1963	31000000
1964	39000000
1965	58400001.5258789
1966	55689998.626709
1967	58169998.1689453
1968	43759998.3215332
1969	51000000
1970	53000000
1971	56000000
1972	48000000
1973	54000000
1974	36000000
1975	14000000
1992	1000000
1995	2000000
1996	3000000
1997	2000000
1998	7670000.07629395
1999	6030000.20980835
2000	2700000.04768372
2001	4519999.98092651
2002	8529999.73297119
2003	6800000.19073486
2004	3519999.98092651
2005	7360000.1335144
2006	4269999.98092651
2007	1399999.97615814
2008	3150000.09536743
2009	7440000.05722046
2010	12819999.6948242
2011	11930000.3051758
2012	8550000.19073486
2013	9340000.15258789
2014	18420000.0762939
2015	25329999.9237061
2016	32470001.220703095
2017	44599998.4741211
2018	55319999.6948242
2019	54069999.6948242
2020	63319999.6948242
2021	69309997.55859381
2022	90010002.1362305