Year	current US$
1961	3589999.91416931
1966	5610000.1335144
1967	18069999.6948242
1989	27799999.237060502
1990	43419998.1689453
1991	99500000
1992	161039993.28613302
1993	104870002.746582
1994	39189998.626709
1995	59069999.6948242
1996	51360000.6103516
1997	89370002.746582
1998	61529998.779296905
1999	52650001.5258789
2000	32810001.373291
2001	34259998.3215332
2002	23899999.6185303
2003	19110000.6103516
2004	24250000
2005	22559999.4659424
2006	21670000.0762939
2007	21629999.1607666
2008	25110000.6103516
2009	68000000
2010	112620002.746582
2011	219190002.44140598
2012	80239997.8637695
2013	66930000.305175796
2014	53409999.8474121
2015	18969999.3133545
2016	24120000.8392334
2017	25329999.9237061
2018	29979999.5422363
2019	26579999.9237061
2020	39419998.1689453
2021	23040000.915527303
2022	6860000.1335144