Year	current US$
1977	64218518.5185185
1978	70918518.5185185
1979	91559259.2592593
1980	102633333.333333
1981	128411111.111111
1982	122588888.888889
1983	125137037.037037
1984	147196296.296296
1985	152003703.703704
1986	186866666.666667
1987	216062962.962963
1988	226640740.740741
1989	277229629.62963
1990	290485185.185185
1991	317518518.518519
1992	334840740.740741
1993	310996296.296296
1994	323111111.111111
1995	324359259.259259
1996	365125925.925926
1997	378074074.074074
1998	369981481.481481
1999	396962962.962963
2000	415277777.777778
2001	388577777.777778
2002	426551851.851852
2003	505296296.296296
2004	534177777.777778
2005	589570370.37037
2006	772600000
2007	957451851.851852
2008	934325925.925926
2009	765181481.481481
2010	880188888.888889
2011	959614814.814815
2012	875514814.814815
2013	921248148.148148
2014	969392592.592592
2015	994385185.185185
2016	1219037037.03704