Year	constant 2010 US$
1970	18676958324.4036
1971	20271207732.3849
1972	21242482162.4302
1973	21967578023.8284
1974	22163206326.2598
1975	24126354527.1682
1976	25409903363.7535
1977	27593715376.1995
1978	29411850784.0256
1979	29682562910.8141
1980	28187871411.6368
1981	33474636138.3026
1982	36392529590.5679
1983	38335446979.0077
1984	41361647349.3393
1985	42736153877.4229
1986	40799487084.8869
1987	40408077800.4647
1988	42385365295.4058
1989	42750474851.8191
1990	42529365326.3397
1991	38268852179.9833
1992	31946978336.1919
1993	28036073280.3374
1994	28446499007.9097
1995	27888179088.0314
1996	29832971223.9561
1997	30503283732.6374
1998	30157410333.2504
1999	31701487971.2199
2000	32479081821.9703
2001	33789182319.2488
2002	34589929281.5664
2003	36602840874.8842
2004	38608661439.2719
2005	42115182638.9217
2006	47925308012.0204
2007	49642760853.2787
2008	48510790838.5398
2009	50295168295.9361
2010	54060876516.4461
2011	54144065570.365
2012	56949534864.1083
2013	58597734012.4622
2014	60339203573.9768
2015	63723021810.1213