Year	constant 2010 US$
1970	6806.55898276487
1971	5907.10685809524
1972	6149.40450483393
1973	6391.94355300436
1974	5666.98085229809
1975	6694.78350756826
1976	7314.51434477534
1977	8141.24989815664
1978	7700.58135281255
1979	6519.26639888226
1980	7061.02351262582
1981	7540.82716695936
1982	7560.70437717761
1983	6208.79616348904
1984	8108.44882215938
1985	8258.80040627126
1986	7696.49539714376
1987	7931.48998530146
1988	8002.26341039007
1989	7201.78646251239
1990	7766.76609567129
1991	8188.51284582845
1992	8358.68183015971
1993	7794.88212596845
1994	7430.77831336989
1995	7779.06303609815
1996	7656.67553455887
1997	7871.04473878794
1998	7436.10178939889
1999	7333.11346179239
2000	8076.00959846921
2001	7960.73662807586
2002	7091.61082157303
2003	6661.3622829867
2004	8127.44271656404
2005	9713.82113099635
2006	11093.5107172473
2007	12615.7744710152
2008	13959.5454718606
2009	11224.1719308049
2010	12662.4860154945
2011	12933.2920326773
2012	13169.4535993683
2013	11853.5366788266
2014	10092.496304333