Year	current US$
1970	39999.9991059303
1971	239999.994635582
1972	219999.998807907
1973	449999.988079071
1974	409999.99642372096
1975	439999.997615814
1976	860000.014305115
1977	829999.983310699
1978	1179999.94754791
1979	2160000.08583069
1980	3920000.07629395
1981	3740000.00953674
1982	2019999.9809265102
1983	2369999.8855590797
1984	1669999.95708466
1985	800000.011920929
1986	980000.019073486
1987	1700000.04768372
1988	740000.009536743
1989	490000.009536743
1990	1330000.04291534
1991	1750000
1992	1320000.05245209
1993	579999.983310699
1994	759999.990463257
1995	1779999.97138977
1996	500000
1997	370000.00476837205
1998	519999.980926514
2000	280000.001192093
2001	740000.009536743
2002	689999.997615814
2003	79999.9982118607
2004	140000.000596046
2005	100000.00149011599
2006	90000.0035762787