Year	current US$
1977	270000.010728836
1980	379999.99523162795
1981	79999.9982118607
1983	39999.9991059303
1984	9999.99977648258
1985	9999.99977648258
1986	29999.999329447703
1988	39999.9991059303
1989	59999.9986588955
1990	59999.9986588955
1991	209999.993443489
1992	180000.00715255702
1993	119999.997317791
1994	129999.995231628
1995	370000.00476837205
1996	389999.98569488496
1997	140000.000596046
1998	189999.99761581398
1999	50000.0007450581
2000	59999.9986588955
2001	59999.9986588955
2002	170000.00178813902
2003	90000.0035762787
2004	209999.993443489
2005	170000.00178813902
2006	140000.000596046
2007	200000.00298023198
2008	209999.993443489
2009	250000
2010	180000.00715255702
2011	219999.998807907
2012	276302.993297577
2013	211872.99489975002
2014	172052.84535884898
2015	267017.751932144
2016	173220.500349998
2017	147774.338722229