Year	current US$
1967	19999.9995529652
1968	19999.9995529652
1969	39999.9991059303
1970	39999.9991059303
1971	50000.0007450581
1972	50000.0007450581
1973	949999.988079071
1974	930000.007152557
1975	829999.983310699
1976	560000.002384186
1977	689999.997615814
1978	1029999.97138977
1979	2160000.08583069
1980	1610000.01430511
1981	870000.004768372
1982	1830000.04291534
1983	899999.976158142
1984	1679999.94754791
1985	1059999.9427795399
1986	2289999.96185303
1987	2980000.01907349
1988	1830000.04291534
1989	1210000.03814697
1990	2920000.07629395
1991	2730000.01907349
1992	2890000.10490417
1993	3519999.98092651
1994	5449999.80926514
1995	4250000
1996	6630000.11444092
1997	12430000.3051758
1998	7409999.84741211
1999	7900000.09536743
2000	9640000.34332275
2001	8880000.11444092
2002	16760000.2288818
2003	12479999.5422363
2004	20510000.2288818
2005	11750000
2006	16829999.9237061
2007	14390000.3433228
2008	12979999.5422363
2009	14029999.7329712
2010	15989999.7711182
2011	11569999.6948242
2012	9800000.19073486
2013	14340000.1525879
2014	9760000.22888184
2015	10640000.3433228
2016	13300000.1907349
2017	14890000.3433228
2018	15609999.6566772
2019	18139999.3896484
2020	41080001.8310547
2021	39389999.3896484
2022	35909999.8474121