Year	constant 2010 US$
1970	122842143842.647
1971	131722334859.526
1972	144530188583.354
1973	157971320761.318
1974	145329058105.506
1975	153246461412.748
1976	163138793359.761
1977	168863900306.848
1978	179682093023.021
1979	184031535650.702
1980	184976955917.56
1981	181726390380.327
1982	183603898727.696
1983	183823527505.51
1984	184355665756.274
1985	189652532769.9
1986	190418356047.675
1987	185293085307.434
1988	196224492077.651
1989	206714343283.367
1990	211186419404.267
1991	218592906905.789
1992	217440303345.291
1993	215371358581.296
1994	217651644139.742
1995	225175886219.671
1996	234239853314.563
1997	240999212590.524
1998	256653903968.633
1999	263642584160.579
2000	275788025933.062
2001	286796384148.152
2002	298498417353.877
2003	319767758944.305
2004	328490717468.354
2005	329657024186.49
2006	354829725824.863
2007	373697822038.811
2008	371973581916.989
2009	348590388832.298
2010	325180577597.326
2011	289132058064.457
2012	260756060922.119
2013	249708670064.108
2014	251921181247.181
2015	248750013366.792
2016	249906035266.812
2017	253869665368.719
2018	255049713917.686