Year	current US$
1975	2626973.152
1976	1642180.085
1977	1416666.627
1978	1416666.627
1979	1416666.627
1980	6000000
1981	4250000
1982	4916666.508
1983	4833333.492
1984	3666666.746
1985	3306122.541
1986	166666.6716
1987	2111111.164
1988	1717073.202
1989	3247058.868
1990	3388235.331
1991	5176470.757
1992	6564705.849
1993	19547395.71
1994	26785129.55
1995	30397815.4372313
1996	28126252.8484631
1997	30199890.3227853
1998	44567528.6575004
1999	54400000
2000	38100002.0159381
2001	40900002.1872067
2002	79100000
2003	86800000
2004	86900000
2005	92400000
2006	91200000
2007	109400000
2008	94500000
2009	109300000
2010	90900000
2011	161839741.862165
2012	138785056.693274
2013	145129593.701646
2014	144830210.187993
2015	155202797.781241
2016	145162743.210442
2017	135092606.602892
2018	138708322.564014
2019	144013909.747584
2020	194437635.916804
2021	233993622.472017
2022	204365466.531551
2023	177185668.945313