Year	current US$
1970	4750000.020489096
1971	5229999.992996453
1972	5770000.0628829
1973	6330000.035464759
1974	6900000.061839818
1975	8750000.06332994
1976	9049999.997019757
1977	11769999.960437415
1978	13030000.055208795
1979	12089999.806135893
1980	3299999.954178929
1981	15569999.957457192
1982	14779999.928548936
1983	20159999.923780568
1984	15539999.848231662
1985	22800000.000745036
1986	18500000.031664975
1987	24059999.991208322
1988	18150000.166147936
1989	25910000.059753664
1990	21119999.935850497
1991	28409999.877214428
1992	22990000.084042564
1993	35059999.86827371
1994	22630000.066012163
1995	54829999.89390373
1996	22519999.63447452
1997	35829999.87900256
1998	22980000.071227554
1999	38440000.38504599
2000	33750000.26077031
2001	34510000.13947487
2002	32559999.80680645
2003	39280000.23961069
2004	30949999.824166283
2005	39320000.11205673
2006	27219999.965280306
2007	34530000.54508449
2008	10679999.986663464