Year	constant 2010 US$
1970	97613216125.8601
1971	112595344735.189
1972	131415308590.73
1973	159000264142.714
1974	180081506742.266
1975	197611260642.634
1976	211497794748.378
1977	209021924747.781
1978	218945631472.026
1979	227453166843.345
1980	248314040293.162
1981	217547045471.564
1982	202921123905.641
1983	170254138985.454
1984	172355979914.209
1985	187507178723.23
1986	230596403477.856
1987	227968811575.981
1988	216933856085.11
1989	219561218242.418
1990	201782671516.975
1991	218094402000.909
1992	203654223965.439
1993	216536859083.674
1994	247408018303.774
1995	265444073044.566
1996	267563544452.024
1997	290087349647.567
1998	289612068269.668
1999	263908121475.671
2000	276610525011.369
2001	280218841575.716
2002	276173112551.16
2003	265168960720.782
2004	287673753353.797
2005	293301517621.646
2006	312837710891.314
2007	350229350159.163
2008	393261883071.851
2009	384870166723.511
2010	453584583901.774
2011	484582764893.133
2012	488356584015.462
2013	516814104195.089
2014	494983521600.728
2015	425950643758.527
2016	374283569974.989
2017	364949097828.559
2018	380024184458.845