Year	current US$
1968	1580000.04291534
1969	2150000.09536743
1970	2079999.9237060498
1971	2109999.89509583
1972	2299999.95231628
1973	2700000.04768372
1974	2950000.04768372
1975	1960000.03814697
1976	1710000.03814697
1977	1940000.0572204601
1978	1940000.0572204601
1979	2519999.98092651
1980	3029999.97138977
1981	4409999.84741211
1982	6199999.80926514
1983	5730000.01907349
1984	7960000.03814697
1985	5429999.82833862
1986	8770000.45776367
1987	8880000.11444092
1988	10020000.4577637
1989	8300000.19073486
1990	7010000.228881841
1991	8409999.84741211
1992	7159999.84741211
1993	4710000.03814697
1994	2970000.02861023
1995	2910000.08583069
1996	1919999.95708466
1997	2829999.92370605
1998	1929999.94754791
1999	2279999.97138977
2000	3369999.8855590797
2001	2250000
2002	3440000.05722046
2003	2799999.95231628
2004	4360000.1335144
2005	3869999.8855590797
2006	4320000.17166138
2007	5690000.05722046
2008	2869999.8855590797
2009	5320000.17166138
2010	4579999.92370605
2011	3799999.95231628
2012	2433046.57936096
2013	1947999.00054932
2014	3571682.21473694
2015	4019623.2795715295
2016	2815371.99020386
2017	6462275.02822876
2018	2177583.21762085
2019	5586312.7708435105
2020	4140690.32669067
2021	5685226.44042969
2022	3538061.1419677697