Year	current US$
1977	4232108.34695622
1978	41888571.1023677
1979	48025779.9133137
1980	40031532.9071421
1981	-57381251.4669357
1982	-77464922.639307
1983	-103196464.721475
1984	-18239794.0331328
1985	-6916110.16569811
1992	43346003.9187286
1993	73761913.4131212
1994	50185270.2575164
1995	103018725.429037
1996	155889688.770973
1997	114405030.888576
1998	90341458.808219
1999	70092952.2138936
2000	49191924.5253088
2001	28078958.7756972
2002	29025358.4033903
2003	64029166.1407379
2004	133072308.084128
2005	125723386.205571