Year	current US$
1968	949999.988079071
1969	1649999.97615814
1970	2869999.8855590797
1971	2799999.95231628
1972	3349999.90463257
1973	3099999.90463257
1974	2670000.07629395
1975	3680000.0667572
1976	3680000.0667572
1977	3849999.90463257
1978	3920000.07629395
1979	4150000.09536743
1980	3809999.94277954
1981	3420000.07629395
1982	2380000.1144409203
1983	2059999.94277954
1984	1870000.00476837
1985	2200000.04768372
1986	3059999.94277954
1987	3519999.98092651
1988	3880000.1144409203
1989	3980000.01907349
1990	5280000.20980835
1991	4050000.1907348596
1992	2839999.91416931
1993	1519999.98092651
1994	1440000.0572204601
1995	1210000.03814697
1996	230000.004172325
1997	2039999.96185303
1998	2220000.02861023
1999	1950000.04768372
2000	1340000.0333786
2001	1740000.0095367401
2002	2500000
2003	4380000.11444092
2004	4929999.82833862
2005	3500000
2006	4269999.98092651
2007	4349999.90463257
2008	7840000.15258789
2009	7610000.1335144
2010	7150000.09536743
2011	3740000.00953674
2012	2378630.87654114
2013	2346502.06565857
2014	3078982.59162903
2015	2226413.96522522
2016	3267659.42573547
2017	2702300.78697205
2018	763087.868690491
2019	1556541.3236618
2020	3643157.24372864
2021	2512483.59680176
2022	1278156.63814545