Year	constant 2010 US$
1970	19601031350.326
1971	21283556246.2655
1972	22310846642.8278
1973	23077110112.4995
1974	23304302372.9267
1975	25512717358.1423
1976	26897537569.4087
1977	29240179372.424
1978	31168861184.8217
1979	31508035527.6196
1980	29980071319.3531
1981	35882647993.8906
1982	39082746853.6651
1983	41197698257.6915
1984	44464558940.0995
1985	45174513258.4376
1986	45217566099.0766
1987	44131362144.0037
1988	45766667379.8909
1989	46077918811.0421
1990	44719281449.4919
1991	39937584135.5892
1992	35312571036.5985
1993	30058702909.8081
1994	30274202861.8866
1995	31018100929.5548
1996	33449532210.3959
1997	34380574866.286
1998	34435290193.9529
1999	36566406042.1146
2000	38729221263.7745
2001	39962758542.8036
2002	40532156423.1685
2003	42069435823.0969
2004	44497068633.1936
2005	49481477379.3051
2006	55451844706.1798
2007	59478833619.1821
2008	61927474920.461
2009	62826231727.1023
2010	64328000000
2011	66130664082.0884
2012	68124437664.6088
2013	69996226459.6195
2014	70729490571.2058
2015	73868565769.7899
2016	74248073997.598
2017	75572286635.3427