Year	constant 2010 US$
1975	58146807265.3124
1976	59752053014.9937
1977	59912991115.0098
1978	62294390123.4548
1979	67053714572.3234
1980	70315018807.9328
1981	72084449881.5121
1982	74239288471.8666
1983	76791454399.1026
1984	80058809532.7254
1985	83254645745.7096
1986	85809460521.8581
1987	89160254396.2261
1988	92835532262.3807
1989	96717420343.7137
1990	98586183251.5134
1991	94316238804.4927
1992	91341581475.706
1993	91047559246.4136
1994	95341343333.6472
1995	100787376697.837
1996	104164659061.331
1997	109133899621.263
1998	114458085935.476
1999	119701482357.857
2000	125420347160.039
2001	129883657577.675
2002	130835918761.735
2003	131417341098.038
2004	135993227594.458
2005	138737435067.853
2006	141007498585.903
2007	147605781227.05
2008	151560512653.478
2009	144141086849.443
2010	145831052455.646
2011	149938092694.545
2012	150861216540.566
2013	148714324496.95
2014	148077276333.483
2015	148062707664.464
2016	150840025749.266
2017	153853091387.285
2018	155913895841.244