Year	current US$
1977	83920974.73
1978	112963012.7
1979	130798111
1980	164692703.2
1981	149682266.2
1982	126301345.8
1983	156824249.3
1984	141269714.4
1985	130872345
1986	101439361.6
1987	82272422.79
1988	53256538.39
1989	38377834.32
1990	31481969.0371486
1991	22032304.1215837
2005	26999999.9999988
2006	35000000.0000016
2007	48863732.651948
2008	26782545.1641349
2009	45702405.8364337
2010	27971375.7452961
2011	30901604.941008
2012	44242618.9188504
2013	38715810.1979153
2014	295922112.14148
2015	72128990.5929386
2016	76633496.3215657
2017	214378056.734394
2018	87006383.2050524
2019	81545364.5801963
2020	149253465.262997
2021	83259319.4087488
2022	60221597.9238696