Year	current US$
1968	100000.00149011599
1969	289999.99165535
1970	340000.00357627904
1971	639999.985694885
1972	1129999.99523163
1973	1649999.97615814
1974	1830000.04291534
1975	3299999.95231628
1976	2930000.0667572
1977	1840000.0333786
1978	1730000.01907349
1979	1970000.02861023
1980	2519999.98092651
1981	2559999.94277954
1982	2349999.90463257
1983	1230000.01907349
1984	920000.016689301
1985	1190000.0572204601
1986	1539999.96185303
1987	2099999.90463257
1988	2779999.97138977
1989	2940000.05722046
1990	1860000.01430511
1991	740000.009536743
1992	1759999.9904632599
1993	280000.001192093
1994	1230000.01907349
1995	-270000.010728836
1996	1080000.04291534
1997	1509999.9904632599
1998	439999.997615814
1999	370000.00476837205
2000	300000.011920929
2001	259999.990463257
2002	259999.990463257
2003	140000.000596046
2004	200000.00298023198
2005	569999.992847443
2006	910000.026226044
2007	939999.997615814
2008	910000.026226044
2009	860000.014305115
2010	990000.009536743
2011	639999.985694885
2012	442183.73298644996
2013	445538.01417350804
2014	356382.310390472
2015	398805.767297745
2016	185725.167393684
2017	150000.005960464