Year	current US$
1975	10279999.7329712
1976	5730000.01907349
1977	13890000.3433228
1978	49560001.373291
1979	12010000.2288818
1980	3220000.02861023
1985	289999.99165535
1986	779999.971389771
1987	589999.973773956
1988	360000.01430511504
1989	2259999.99046326
1990	6199999.80926514
1991	19069999.6948242
1992	20819999.6948242
1993	14250000
1994	20729999.5422363
1995	23010000.2288818
1996	19870000.8392334
1997	23590000.1525879
1998	22069999.6948242
1999	16530000.6866455
2000	12109999.6566772
2001	21260000.2288818
2002	18000000
2003	30010000.2288818
2004	27930000.3051758
2005	42409999.8474121
2006	41810001.373291
2007	67709999.0844727
2008	68000000
2009	51919998.1689453
2010	41919998.1689453
2011	147449996.94824198
2012	33979999.5422363
2013	55270000.4577637
2014	38509998.3215332
2015	58549999.237060495
2016	26180000.3051758
2017	72730003.3569336
2018	79269996.6430664
2019	33880001.0681152
2020	86040000.9155273
2021	17309999.4659424
2022	36599998.4741211