Year	current US$
1968	300000.011920929
1969	469999.998807907
1970	519999.980926514
1971	620000.004768372
1972	790000.021457672
1973	839999.973773956
1974	800000.011920929
1975	1240000.0095367401
1976	1179999.94754791
1977	1139999.98569489
1978	1240000.0095367401
1979	1039999.96185303
1980	1840000.0333786
1981	2150000.09536743
1982	2549999.95231628
1983	2660000.08583069
1984	2710000.03814697
1985	2240000.00953674
1986	2089999.9141693101
1987	1309999.9427795399
1988	2279999.97138977
1989	1419999.95708466
1990	990000.009536743
1991	529999.971389771
1992	540000.021457672
1993	-70000.0002980232
1994	209999.993443489
1995	289999.99165535
1996	50000.0007450581
1997	250000
1998	219999.998807907
1999	-19999.9995529652
2000	100000.00149011599
2001	19999.9995529652
2002	59999.9986588955
2003	140000.000596046
2004	460000.00834465
2005	740000.009536743
2006	509999.99046325695
2007	569999.992847443
2008	259999.990463257
2009	340000.00357627904
2010	159999.99642372102