Year	current US$
1968	2670000.07629395
1969	1500000
1970	2099999.90463257
1971	1950000.04768372
1972	2440000.05722046
1973	3000000
1974	2650000.09536743
1975	4699999.80926514
1976	4679999.82833862
1977	3990000.00953674
1978	4840000.15258789
1979	6300000.19073486
1980	7659999.84741211
1981	7519999.98092651
1982	7889999.8664856
1983	7760000.228881841
1984	6590000.15258789
1985	7300000.19073486
1986	7690000.05722046
1987	7719999.79019165
1988	8699999.80926514
1989	7380000.11444092
1990	7440000.05722046
1991	9569999.69482422
1992	12220000.2670288
1993	7280000.20980835
1994	6000000
1995	4570000.17166138
1996	4150000.09536743
1997	6599999.90463257
1998	5389999.8664856
1999	5650000.09536743
2000	4989999.771118159
2001	3180000.0667572
2002	1659999.9666214
2003	3190000.05722046
2004	2480000.01907349
2005	2559999.94277954
2006	3109999.89509583
2007	2960000.03814697
2008	3339999.91416931
2009	3559999.94277954
2010	3369999.8855590797
2011	3059999.94277954
2012	2156719.68460083
2013	892838.001251221
2014	1608370.78094482
2015	1631098.8664627098
2016	687741.219997406
2017	720780.01499176
2018	353322.744369507
2019	666922.569274902
2020	631977.796554565
2021	561265.707015991
2022	921475.648880005