Year	current US$
1972	79999.9982118607
1973	39999.9991059303
1974	59999.9986588955
1975	29999.999329447703
1976	50000.0007450581
1977	59999.9986588955
1980	19999.9995529652
1988	119999.997317791
1989	100000.00149011599
1990	100000.00149011599
1991	379999.99523162795
1992	629999.995231628
1993	500000
1994	469999.998807907
1995	720000.028610229
1996	680000.007152557
1997	629999.995231628
1998	860000.014305115
1999	1429999.94754791
2000	2890000.10490417
2001	639999.985694885
2002	620000.004768372
2003	670000.016689301
2004	579999.983310699
2005	670000.016689301
2006	779999.971389771
2007	1110000.01430511
2008	1149999.97615814
2009	920000.016689301
2010	1039999.96185303
2011	1269999.98092651
2012	1159999.9666214
2013	1210000.03814697
2014	1049999.95231628
2015	829999.983310699
2016	699999.988079071
2017	709999.978542328
2018	449999.988079071
2019	259999.990463257