Year	constant 2010 US$
1970	8145963211.32532
1971	8263617490.91925
1972	8893636459.59455
1973	9941136288.84542
1974	10628084908.8821
1975	10305485051.6904
1976	11566787029.2757
1977	11840048058.1168
1978	12034872931.6072
1979	12726882183.1051
1980	12890079289.6836
1981	13516302753.7177
1982	14390485362.1434
1983	14298132439.2288
1984	14704229114.2777
1985	14996466362.4228
1986	15621424699.6368
1987	16719529539.5983
1988	17173028127.0373
1989	17990151935.6741
1990	17679211387.4142
1991	17863088851.6345
1992	19088258886.7157
1993	18489103939.6479
1994	18138906677.843
1995	17679211387.4142
1996	18480840271.9568
1997	18604801806.8362
1998	18090354878.7681
1999	18177129893.5146
2000	19278335599.6399
2001	19244996212.474
2002	19796668529.3844
2003	20990595510.8503
2004	21971905342.8953
2005	22541819937.2885
2006	23857328272.9502
2007	25963163484.5239
2008	25068894042.4079
2009	22492859364.8133
2010	25730961472.7888
2011	27492161062.9909
2012	27756356524.1688
2013	28307410511.9369
2014	28887026171.1838
2015	29305516748.9367
2016	27788333178.1069
2017	29793548787.6812
2018	29662227189.4694