Year	current US$
1968	2259999.99046326
1969	1600000.02384186
1970	1990000.0095367401
1971	2250000
1972	2829999.92370605
1973	2660000.08583069
1974	2190000.05722046
1975	3230000.01907349
1976	2859999.89509583
1977	3099999.90463257
1978	3430000.0667572
1979	5369999.88555908
1980	6480000.01907349
1981	8609999.65667725
1982	10949999.8092651
1983	11359999.6566772
1984	10960000.038146999
1985	10869999.8855591
1986	12880000.1144409
1987	11720000.2670288
1988	11829999.923706101
1989	12289999.961853001
1990	8289999.961853029
1991	10770000.4577637
1992	12020000.4577637
1993	8319999.694824221
1994	5380000.11444092
1995	6360000.1335144
1996	8319999.694824221
1997	11319999.6948242
1998	9840000.15258789
1999	7510000.228881841
2000	1960000.03814697
2001	2630000.1144409203
2002	3559999.94277954
2003	3829999.92370605
2004	8250000
2005	4300000.19073486
2006	7320000.17166138
2007	5980000.01907349
2008	6690000.05722046
2009	11079999.923706101
2010	7880000.11444092
2011	5179999.82833862
2012	3022507.42912292
2013	2969222.06878662
2014	4716431.14089966
2015	3913957.1189880404
2016	5260965.34729004
2017	4522460.9375
2018	5251851.08184814
2019	7767608.642578131
2020	11419846.534729
2021	6468985.55755615
2022	9672413.82598877