Year	current US$
1972	9999.99977648258
1978	9999.99977648258
1979	19999.9995529652
1984	9999.99977648258
1985	19999.9995529652
1988	19999.9995529652
1989	9999.99977648258
1990	39999.9991059303
1991	79999.9982118607
1992	9999.99977648258
1993	50000.0007450581
1994	59999.9986588955
1995	259999.990463257
1996	170000.00178813902
1997	230000.004172325
1998	159999.99642372102
1999	180000.00715255702
2000	209999.993443489
2001	189999.99761581398
2002	310000.002384186
2003	460000.00834465
2004	550000.011920929
2005	419999.986886978
2006	219999.998807907
2007	460000.00834465
2008	600000.023841858
2009	239999.994635582
2010	699999.988079071
2011	980000.019073486
2012	349999.99403953605
2013	430000.00715255697
2014	449999.988079071
2015	300000.011920929
2016	370000.00476837205
2017	129999.995231628