Year	current US$
1968	439999.997615814
1969	1019999.98092651
1970	970000.028610229
1971	1090000.0333786
1972	910000.026226044
1973	850000.023841858
1974	1379999.99523163
1975	3279999.97138977
1976	2990000.00953674
1977	2079999.9237060498
1978	2869999.8855590797
1979	4059999.94277954
1980	4239999.771118159
1981	5869999.88555908
1982	4389999.8664856
1983	3740000.00953674
1984	4989999.771118159
1985	5349999.90463257
1986	4559999.94277954
1987	5969999.79019165
1988	5900000.09536743
1989	6260000.228881841
1990	5659999.84741211
1991	8449999.80926514
1992	8329999.923706049
1993	6389999.8664856
1994	3700000.04768372
1995	1779999.97138977
1996	4150000.09536743
1997	5510000.228881841
1998	4460000.03814697
1999	3359999.89509583
2000	2970000.02861023
2001	860000.014305115
2002	2839999.91416931
2003	5019999.98092651
2004	2250000
2005	3240000.00953674
2006	2440000.05722046
2007	2920000.07629395
2008	5840000.15258789
2009	5849999.90463257
2010	5000000
2011	3859999.89509583
2012	3988340.85464478
2013	3956039.9055481004
2014	4242110.25238037
2015	3781036.6153717
2016	3898795.60470581
2017	3400936.1267089797
2018	3788172.0066070603
2019	4462170.124053961
2020	4759504.3182373
2021	7346579.55169678
2022	4839182.85369873