Year	current US$
1978	561208558.3272744
1979	724420876.5607728
1980	765336710.7982169
1981	841713382.2873853
1982	885558316.7084829
1983	1005599984.7103548
1984	1011656382.9111236
1985	1040570976.9137877
1986	855168788.5199426
1987	719679490.1482387
1988	773044743.7714202
1989	866968039.5274093
1990	983748218.0944626
1991	836916759.667172
1992	867046124.395291
1993	1004016846.0888784
1994	809431194.5061245
1995	830237350.5803715
1996	906161270.2202517
1997	942199515.7680318
1998	979388527.8567894
1999	849081918.1831183
2000	840740094.1534485
2001	691078292.7691743
2002	732844540.7730136
2003	814734590.9910637
2004	916437481.2081462
2005	1012639355.0975499
2007	979652705.044879
2008	1624328039.8509836
2009	1632780803.0331123
2010	1743823535.883046
2011	2444947743.7254567
2012	2373205878.3896723
2013	2669293781.967009
2014	2352918319.4380264
2015	1860652491.9585454