Year	current US$
1975	114540903.83061093
1976	121926703.88971205
1977	166044549.67803466
1978	191119876.6832945
1979	234648280.9937255
1980	355074825.7212053
1981	383782072.7332622
1982	407576356.9256599
1983	427583481.2234524
1984	453407010.01347405
1985	502576452.72016114
1986	441631314.8207627
1987	454647089.27609015
1988	570047547.5867599
1989	630167863.4469001
1990	307551752.04569185
1991	277749109.45321435
1992	284022272.5
1993	272540119.004251
1994	325816776.90051234
1995	201155209.76346144
1996	250651422.8148459
1997	244453251.25490978
1998	350051146.7626659
1999	332668860.8671009
2000	325896312.5
2001	259427197.5
2002	295792872.525
2003	380223015
2004	279863091.7892771
2005	146374561.5143365
2006	340932975.70475
2007	629412047.30175
2008	385683372.6065
2009	318823521.6735
2010	295044585.28575003
2011	90812702.71692498
2012	196928745.7417873
2013	235531219.1593018
2014	205730742.9340967
2015	232106617.4715256
2016	128478013.4015006
2017	247939064.0651175