Year	constant 2010 US$
1971	5476.67611100896
1972	5280.43804196676
1973	4990.74731210355
1974	5207.59273622556
1975	5424.78654449316
1976	5769.01232700595
1977	5784.6876712013
1978	6165.20500913591
1979	6638.01823563108
1980	6702.81662649002
1981	7056.79233226838
1982	6210.70417830723
1983	4925.67753429873
1984	4735.79279892737
1985	4665.22458017241
1986	5363.49331161784
1987	5946.17588393548
1988	6030.83492959657
1989	6091.63653674243
1990	5840.93821957201
1991	6203.37299366071
1992	6818.00569240009
1993	7123.87814395125
1994	7684.52292512588
1995	7498.97458809171
1996	7898.16458482862
1997	8133.50954949655
1998	8522.77580700657
1999	8258.83797392491
2000	7984.39936452937
2001	7712.09426603124
2002	7230.71550152283
2003	6881.67558251249
2004	7168.32651682545
2005	7649.65997295016
2006	7946.50123348038
2007	8505.81044681793
2008	9031.41646607782
2009	9483.52176186024
2010	10256.2774087538
2011	10943.9972539587
2012	11414.5151236427
2013	11983.8837360254
2014	12278.1660973558
2015	12246.5225057719
2016	12378.8028428839
2017	12563.4448929451