Year	constant 2010 US$
1971	3649503999.21393
1972	3879649411.94654
1973	4188241975.50727
1974	3993450330.37695
1975	4078000133.0404
1976	4778772097.37424
1977	5556131480.97057
1978	5607045627.10649
1979	5628758060.64527
1980	5651402294.10957
1981	5160497419.22437
1982	4744474829.51705
1983	4849003424.8879
1984	5444241874.23057
1985	5788387280.32543
1986	6212269305.66281
1987	6601064544.41459
1988	6870534519.93771
1989	6838152662.92664
1990	6786305626.48124
1991	6809310714.72915
1992	7065598845.28456
1993	7953418988.3069
1994	8243408330.30319
1995	8703248652.17218
1996	8648769653.83223
1997	9078839948.94409
1998	9589857737.38181
1999	9698768565.92999
2000	10344322996.1098
2001	10526718341.3246
2002	10743170150.8869
2003	11006925907.2257
2004	11388559770.0159
2005	11970971394.6828
2006	12526384878.7985
2007	13433628324.4949
2008	13459478658.9052
2009	13483382594.0376
2010	13896104158.1735
2011	14549106710.1396
2012	14782188766.2321
2013	14622480039.6425
2014	15206055881.6046
2015	16825501592.9807
2016	17442016162.0582
2017	18185802445.884