Year	constant 2010 US$
1970	4719.84089648302
1971	4945.24814787809
1972	5174.51509428575
1973	5503.11010694983
1974	5750.18641422253
1975	5828.58936085596
1976	6030.96125987084
1977	6163.47523415542
1978	6227.29728607438
1979	6486.25518066778
1980	6722.35831105979
1981	6531.11304245906
1982	6222.96938821142
1983	5907.86693487563
1984	5994.30712396594
1985	6116.90699715816
1986	6301.46474653041
1987	6424.0910269903
1988	6359.90128853319
1989	6560.36854726408
1990	6293.90029770432
1991	6446.49737362325
1992	6511.98759400037
1993	6650.56006828519
1994	6800.1172287603
1995	6826.85495553625
1996	6921.8743004202
1997	7159.34948739306
1998	7167.96925858142
1999	7036.00260346517
2000	7260.22892799104
2001	7200.85581027376
2002	7092.00976426028
2003	7096.4253598485
2004	7398.625312721
2005	7621.59888253855
2006	7993.73535565269
2007	8378.94422972891
2008	8620.55985415313
2009	8348.53762694448
2010	8715.24465056988
2011	9001.31745451284
2012	9178.09360236268
2013	9358.87078903183
2014	9360.72695854774
2015	9275.62593138807
2016	9147.01647032032
2017	9207.91177019341
2018	9246.26218939872