Year	constant 2010 US$
1970	199030944851.643
1971	205935374430.651
1972	215440000322.246
1973	233206126252.428
1974	243793676541.894
1975	240113407449.734
1976	253032141061.943
1977	258509675729.383
1978	267032418889.299
1979	276455343022.822
1980	284552854149.659
1981	276126140901.352
1982	275668108172.19
1983	270722847111.693
1984	276689970245.391
1985	281607300253.644
1986	289510610757.574
1987	298787160029.96
1988	313722255311.746
1989	327159464809.356
1990	337905739290.917
1991	343696224199.766
1992	349881718040.486
1993	346723411248.665
1994	355186143279.6
1995	362572113724.542
1996	368905061302.562
1997	378983671562.713
1998	387888338340.871
1999	397198558456.209
2000	411831443784.272
2001	412521331450.731
2002	412032398971.907
2003	414826540823.25
2004	429095054468.177
2005	440488556904.46
2006	448796747408.176
2007	464152009461.707
2008	474168727645.265
2009	465186732755.918
2010	474859939206.41
2011	485111892390.92
2012	485264951887.173
2013	483984267343.224
2014	494006386662.157
2015	502036407370.224
2016	512348004420.812
2017	518189784553.738
2018	524134051035.054