Year	current US$
1964	29999.999329447703
1965	9999.99977648258
1967	9999.99977648258
1968	9999.99977648258
1969	39999.9991059303
1970	70000.0002980232
1971	39999.9991059303
1972	39999.9991059303
1973	39999.9991059303
1974	29999.999329447703
1975	50000.0007450581
1976	9999.99977648258
1977	389999.98569488496
1978	670000.016689301
1979	519999.980926514
1980	449999.988079071
1981	370000.00476837205
1982	860000.014305115
1983	649999.976158142
1984	409999.99642372096
1985	670000.016689301
1986	879999.995231628
1987	1379999.99523163
1988	1590000.0333786
1989	860000.014305115
1990	2000000
1991	1990000.0095367401
1992	2059999.94277954
1993	2019999.9809265102
1994	2559999.94277954
1995	1690000.0572204601
1996	2019999.9809265102
1997	1710000.03814697
1998	1149999.97615814
1999	1200000.04768372
2000	1220000.02861023
2001	479999.989271164
2002	600000.023841858
2003	850000.023841858
2004	529999.971389771
2005	769999.980926514
2006	680000.007152557
2007	379999.99523162795
2008	519999.980926514
2009	550000.011920929
2010	629999.995231628
2011	519999.980926514
2012	879999.995231628
2013	620000.004768372
2014	790000.021457672
2015	469999.998807907
2016	1659999.9666214
2017	660000.026226044
2018	629999.995231628
2019	740000.009536743
2020	689999.997615814
2021	419999.986886978
2022	620000.004768372