Year	current US$
1976	1300354.838
1977	3200000.048
1978	5800000.191
1979	8699999.809
1980	8600000.381
1981	8500000
1982	7500000
1983	9399999.619
1984	10800000.19
1985	11100000.38
1986	7703703.88
1987	11777777.67
1988	16111110.69
1989	13370369.91
1990	13922222.14
1991	4959259.033
1992	5174074.173
1993	13737036.71
1994	13285184.86
1995	10840740.7407407
1996	11107407.4074074
1997	11429629.6296296
1998	12070370.3703703
1999	12985185.1851852
2000	13522222.2222222
2001	14342592.5925926
2002	14457759.2592593
2003	14804814.8148148
2004	20031140.7407408
2005	43132261.0656011
2006	44139239.4537866
2007	45269600.5584885
2008	45679669.4275566
2009	44574853.6919685
2010	46211700.0332561
2011	46332250.4460242
2012	47070245.1539167
2013	47989377.2532319
2014	50401197.0579033
2015	51914982.5685926
2016	44033723.6654388
2017	44351321.0767778
2018	42141418.3715478
2019	47506082.4979811
2020	33656322.3950963
2021	40200060.1283696
2022	37783388.6283696
2023	59158267.9748535