Year	current US$
1976	19999.9995529652
1983	3549999.95231628
1984	7650000.09536743
1985	11850000.3814697
1986	8170000.076293951
1987	16110000.610351602
1988	22250000
1989	18170000.0762939
1990	12279999.7329712
1991	55680000.3051758
1992	20819999.6948242
1993	23569999.6948242
1994	16200000.7629395
1995	9319999.69482422
1996	13060000.4196167
1997	14300000.1907349
1998	12029999.7329712
1999	12829999.923706101
2000	11069999.6948242
2001	11279999.7329712
2002	20270000.4577637
2003	10810000.4196167
2004	15300000.1907349
2005	2579999.92370605
2006	3309999.94277954
2007	709999.978542328
2008	1570000.05245209
2010	3470000.02861023
2016	16243917.46521
2018	9292967.79632568
2019	9958934.78393555
2020	4375983.71505737