Year	current US$
1971	39999.9991059303
1972	29999.999329447703
1976	59999.9986588955
1977	9999.99977648258
1989	29999.999329447703
1990	150000.005960464
1991	59999.9986588955
1992	259999.990463257
1993	730000.019073486
1994	889999.985694885
1995	1029999.97138977
1996	709999.978542328
1997	730000.019073486
1998	879999.995231628
1999	660000.026226044
2000	620000.004768372
2001	860000.014305115
2002	610000.014305115
2003	560000.002384186
2004	519999.980926514
2005	529999.971389771
2006	500000
2007	519999.980926514
2008	529999.971389771
2009	750000
2010	800000.011920929
2011	850000.023841858
2012	892598.450183868
2013	749574.0056037899
2014	991559.982299805
2015	868071.913719177
2016	924604.713916779
2017	1004999.9952316299