Year	current US$
1966	19999.9995529652
1975	109999.999403954
1976	9999.99977648258
1977	280000.001192093
1978	319999.99284744303
1979	300000.011920929
1980	370000.00476837205
1981	610000.014305115
1982	720000.028610229
1983	889999.985694885
1984	949999.988079071
1985	769999.980926514
1986	1549999.95231628
1987	2180000.0667572
1988	2319999.9332428
1989	2339999.91416931
1990	3119999.8855590797
1991	3809999.94277954
1992	4559999.94277954
1993	4760000.228881841
1994	4940000.05722046
1995	6289999.96185303
1996	5539999.96185303
1997	2069999.9332428002
1998	2069999.9332428002
1999	1740000.0095367401
2001	300000.011920929
2002	239999.994635582
2003	289999.99165535
2004	319999.99284744303