Year	current US$
1970	5050000.051036475
1971	4410000.035539267
1972	5180000.064894554
1973	5240000.011399386
1974	6140000.039711596
1975	6290000.032633538
1976	8010000.007227066
1977	9759999.990463257
1978	11069999.881088732
1979	9770000.010728838
1980	3639999.9745190116
1981	13780000.120401379
1982	14210000.008344652
1983	18080000.01311302
1984	14810000.032186508
1985	21120000.06437302
1986	20989999.89032745
1987	24240000.009536743
1988	20270000.040531155
1989	24929999.94754792
1990	25330000.16212464
1991	30330000.04291533
1992	25810000.18119813
1993	38830000.28133395
1994	29150000.095367435
1995	54789999.783039086
1996	26019999.921321873
1997	35889999.92609023
1998	28500000.05960465
1999	43960000.395774834
2000	47940000.05722046
2001	30399999.976158123
2002	46290000.43869018
2003	50039999.84264373
2004	49410000.08583068
2005	58330000.16212464
2006	34859999.77588654
2007	47759999.87125396
2008	14229999.955743548