Year	current US$
1968	1370000.00476837
1969	730000.019073486
1970	1419999.95708466
1971	1299999.95231628
1972	1490000.0095367401
1973	1559999.9427795399
1974	1850000.02384186
1975	4010000.2288818406
1976	4019999.98092651
1977	3349999.90463257
1978	3109999.89509583
1979	4239999.771118159
1980	6179999.82833862
1981	9010000.22888184
1982	11750000
1983	7619999.88555908
1984	8199999.80926514
1985	7800000.19073486
1986	11199999.8092651
1987	11760000.2288818
1988	11760000.2288818
1989	12489999.7711182
1990	10300000.1907349
1991	11100000.3814697
1992	10520000.4577637
1993	7710000.03814697
1994	6449999.80926514
1995	7570000.17166138
1996	6079999.92370605
1997	5469999.79019165
1998	4889999.8664856
1999	5280000.20980835
2000	4170000.07629395
2001	3920000.07629395
2002	4989999.771118159
2003	5889999.8664856
2004	6989999.771118159
2005	5880000.11444092
2006	5989999.771118159
2007	5429999.82833862
2008	7619999.88555908
2009	8460000.03814697
2010	7429999.82833862
2011	4250000
2012	5850581.16912842
2013	5553369.04525757
2014	5226506.71005249
2015	5536527.15682983
2016	5414412.49847412
2017	5072149.2767334
2018	3894630.43212891
2019	5999594.21157837
2020	7130168.43795776
2021	7474035.26306152
2022	7102291.58401489