Year	current US$
1975	3720000.02861023
1976	3160000.08583069
1977	2119999.8855590797
1978	9520000.45776367
1979	8270000.45776367
1980	9750000
1981	4880000.11444092
1982	10600000.3814697
1983	12489999.7711182
1984	19610000.6103516
1985	12060000.4196167
1986	9489999.77111816
1987	12109999.6566772
1988	18540000.915527303
1989	24139999.3896484
1990	33880001.0681152
1991	35689998.626709
1992	100569999.69482401
1993	58819999.6948242
1994	47700000.762939505
1995	15989999.7711182
1997	3670000.07629395
1998	3150000.09536743
1999	2230000.01907349
2000	3369999.8855590797
2001	2339999.91416931
2002	5730000.01907349
2003	8770000.45776367
2004	5210000.03814697
2005	6380000.11444092
2006	8470000.26702881
2007	8399999.61853027
2008	10050000.1907349
2009	9439999.5803833
2010	1879999.99523163
2011	5610000.1335144
2012	4775046.34857178
2013	3089777.23121643
2014	2956089.9734497103
2015	4858726.978302
2016	5289480.209350591
2017	2828840.0173187302
2018	576223.075389862
2019	10820940.0177002
2020	6774370.19348145
2021	14987039.56604
2022	12600772.857665999