Year	current US$
1981	7159999.84741211
1985	879999.995231628
1986	7510000.228881841
1987	6650000.09536743
1988	45810001.373291
1989	41240001.6784668
1990	51500000
1991	26770000.4577637
1992	31290000.915527303
1993	19510000.2288818
1994	14100000.3814697
1995	32650001.5258789
1996	34779998.779296905
1997	15470000.2670288
1998	21729999.5422363
1999	39590000.1525879
2000	27440000.5340576
2001	23639999.3896484
2002	31139999.3896484
2003	55380001.0681152
2004	49470001.220703095
2005	66870002.746582
2006	42069999.6948242
2007	56000000
2008	59619998.9318848
2009	42889999.3896484
2010	42590000.1525879
2011	176630004.882813
2012	165639999.38964802
2013	79720001.2207031
2014	61979999.5422363
2015	91349998.4741211
2016	113660003.662109
2017	83879997.253418
2018	180940002.44140598
2019	77589996.3378906
2020	160570007.32421902
2021	73449996.9482422
2022	96110000.6103516