Year	current US$
1975	1100000.02384186
1976	4699999.80926514
1977	1639999.98569489
1978	13569999.6948242
1979	18690000.5340576
1980	16920000.0762939
1981	21120000.8392334
1982	15199999.8092651
1983	12119999.8855591
1984	14579999.923706101
1985	18709999.084472697
1986	14840000.1525879
1987	23760000.2288818
1988	32650001.5258789
1989	36540000.9155273
1990	38250000
1991	31719999.3133545
1992	36200000.762939505
1993	18100000.3814697
1994	32020000.4577637
1995	26520000.4577637
1996	36169998.1689453
1997	27829999.9237061
1998	22540000.915527303
1999	17770000.4577637
2000	17120000.8392334
2001	13369999.8855591
2002	14119999.8855591
2003	13960000.038146999
2004	17299999.237060502
2005	11149999.6185303
2006	7199999.80926514
2007	6650000.09536743
2008	4960000.03814697
2009	1940000.0572204601
2010	1179999.94754791
2011	1399999.97615814
2012	1340000.0333786
2013	1200000.04768372
2014	1450000.04768372
2015	1220000.02861023
2016	1440000.0572204601
2017	1049999.95231628
2018	1000000
2019	790000.021457672
2020	1870000.00476837
2021	2039999.96185303
2022	1830000.04291534