Year	constant 2010 US$
1970	77660665399.2076
1971	82194659321.602
1972	88875032874.8191
1973	99724229702.6249
1974	101316127201.834
1975	94834962956.5538
1976	100075803220.233
1977	105467040952.572
1978	107770092785.322
1979	113686903876.566
1980	118615218037.695
1981	119073954771.654
1982	119902667193.866
1983	120066858109.59
1984	116873802945.143
1985	120907638669.8
1986	127892044159.752
1987	137272842210.735
1988	148575493609.405
1989	158865243936.011
1990	166142860364.978
1991	173754695695.985
1992	176439555025.434
1993	172982457354.508
1994	174162167174.445
1995	182702924015.691
1996	188300113924.24
1997	195221529754.556
1998	204255701938.862
1999	212214987216.539
2000	217239312196.749
2001	221219706477.132
2002	223460100694.897
2003	222465833665.167
2004	225945115974.098
2005	227589164719.542
2006	227300694754.156
2007	232919818743.251
2008	231787220319.586
2009	225247188999.086
2010	230288867625.382
2011	229483414731.48
2012	219123368931.318
2013	218998552731.808
2014	220123039154.774
2015	221679711977.782
2016	226954668792.543
2017	233606184980.464
2018	237708692950.302