Year	current US$
1975	440791.8155
1976	422013.551
1977	307104.528
1978	563227.7131
1979	2353325.605
1980	5575631.142
1981	3706323.862
1982	2317981.958
1983	1222367.525
1984	956062.9129
1985	791334.2118
1986	1855462.193
1987	6700205.326
1988	9300986.29
1989	4780195.236
1990	13708147.05
1991	11739461.9
1992	50134010.31
1993	2268102.407
1994	4895812.035
1995	5448170.45761037
1996	4365199.85910873
1997	2693388.35718676
1998	2207179.52345792
2005	0
2006	0
2007	0
2008	0
2009	0
2010	0
2011	0
2012	0
2013	0
2014	0
2015	0
2016	0
2017	77170265.8334297
2018	60391856.6609151
2019	64458913.6407564
2020	168665175.560508
2021	13175224.8223905
2022	109289566.242757
2023	60000000