Year	constant 2010 US$
1970	2203.66792022468
1971	2350.85238399367
1972	2421.36552827814
1973	2462.66012841471
1974	2449.03977565209
1975	2645.45831315557
1976	2757.5530614406
1977	2969.07071867191
1978	3139.70135289395
1979	3152.63116326922
1980	2981.23783550662
1981	3550.3125964689
1982	3850.5637986213
1983	4043.90222882412
1984	4345.13598632542
1985	4376.7275033315
1986	4348.38102595865
1987	4200.19638410657
1988	4321.30187984882
1989	4312.5779906612
1990	4121.44756193229
1991	3664.79491393967
1992	3238.5893900726
1993	2740.13357805339
1994	2745.67847352971
1995	2783.06539371705
1996	2995.27594197766
1997	3066.84036726302
1998	3064.07494446478
1999	3238.11874439422
2000	3410.89665736836
2001	3522.70928740345
2002	3553.38255802384
2003	3686.68970559458
2004	3886.36561041022
2005	4328.10062093903
2006	4864.56442105191
2007	5198.84991571889
2008	5421.28567896692
2009	5456.2834075272
2010	5602.79184651971
2011	5795.81515779183
2012	5968.79247376724
2013	6128.96016824145
2014	6171.91367385582
2015	6437.02151499528