Year	current US$
1972	29999.999329447703
1973	79999.9982118607
1974	340000.00357627904
1975	959999.978542328
1976	1289999.96185303
1977	959999.978542328
1978	1190000.0572204601
1979	1419999.95708466
1980	1889999.98569489
1981	1740000.0095367401
1982	1580000.04291534
1983	1850000.02384186
1984	1679999.94754791
1985	1179999.94754791
1986	1440000.0572204601
1987	939999.997615814
1988	1470000.02861023
1989	2930000.0667572
1990	300000.011920929
1991	-740000.009536743
1992	819999.992847443
1993	29999.999329447703
1994	-140000.000596046
1995	-9999.99977648258
1997	-100000.00149011599
2000	-19999.9995529652