Year	current US$
1970	4090000.070631499
1971	4630000.0101327915
1972	5180000.00715256
1973	5630000.039935112
1974	5959999.851882461
1975	6940000.070258979
1976	7590000.117197638
1977	9280000.0347197
1978	11759999.975562107
1979	12500000.149011612
1980	1990000.0095367432
1981	14049999.911338083
1982	9020000.08895994
1983	17520000.04053117
1984	10399999.797344211
1985	20449999.868869785
1986	12060000.12159348
1987	22820000.231266025
1988	13159999.936819071
1989	23640000.28371811
1990	14150000.154972088
1991	27120000.183582313
1992	15610000.133514397
1993	32949999.928474434
1994	17139999.92609024
1995	57720000.86307521
1996	17209999.918937672
1997	32510000.22888182
1998	17239999.711513516
1999	32719999.90940094
2000	32580000.042915355
2001	30359999.418258663
2002	37649999.856948815
2003	39770000.33855435
2004	36600000.26226044
2005	48739999.53269957
2006	26920000.07629393
2007	38630000.3528595
2008	6409999.9908357905