Year	constant 2010 US$
1971	3116.39963764194
1972	3209.6298344099
1973	3232.10399645938
1974	3094.00833272102
1975	3126.83068018859
1976	2989.7418521949
1977	2852.99389836575
1978	3129.59502959093
1979	3063.94677148867
1980	3339.32156369302
1981	3564.21204030776
1982	3805.9397102794
1983	3771.22043245663
1984	3621.89167338137
1985	3879.04221924995
1986	3915.46079546398
1987	4293.67486323492
1988	3465.41066754947
1989	3404.55256742954
1990	3537.68734080947
1991	3686.31609988811
1992	4131.90211834138
1993	4353.02949176243
1994	4437.81876596483
1995	4201.83565713194
1996	4247.56338899669
1997	4452.4112956483
1998	4687.36279320069
1999	4633.02411666299
2000	4674.16228682587
2001	4620.16866687239
2002	4858.25884284831
2003	5011.98761575821
2004	5059.73535069714
2005	5458.70529276269
2006	5754.37167655583
2007	6113.24277239276
2008	6690.32481968448
2009	6838.86048642469
2010	6920.05544768771
2011	7835.52770924673
2012	8437.02322201619
2013	9017.47038012223
2014	8857.54458482132
2015	9391.76430682775
2016	9617.54125701555
2017	9835.37319146492