Year	current US$
1976	3599999.90463257
1977	6150000.09536743
1978	8359999.65667725
1979	8960000.03814697
1980	10510000.2288818
1981	12079999.923706101
1982	16469999.3133545
1983	17979999.5422363
1984	14869999.8855591
1985	21229999.5422363
1986	31799999.237060502
1987	35310001.373291
1988	44700000.762939505
1989	49439998.626709
1990	52259998.3215332
1991	68849998.4741211
1992	73110000.6103516
1993	59119998.9318848
1994	72169998.1689453
1995	52229999.5422363
1996	51790000.9155273
1997	54729999.5422363
1998	49490001.6784668
1999	36669998.1689453
2000	38209999.0844727
2001	32610000.6103516
2002	38680000.3051758
2003	54110000.6103516
2004	61060001.373291
2005	67940002.44140631
2006	64250000
2007	80129997.253418
2008	96669998.1689453
2009	80410003.6621094
2010	73690002.44140631
2011	84139999.3896484
2012	86110000.6103516
2013	50740001.6784668
2014	57250000
2015	32750000
2016	28500000
2017	36310001.373291
2018	42000000
2019	57860000.6103516
2020	48900001.5258789
2021	59819999.6948242
2022	51310001.373291