Year	constant 2010 US$
1964	9712.14213580031
1965	10341.6650326218
1966	10899.8905578378
1967	11278.0522266847
1968	11743.3759334416
1969	12726.1606140118
1970	13538.7060514453
1971	14217.8550412294
1972	14573.4047962865
1973	14931.6215930732
1974	14935.2448910425
1975	14503.9296300922
1976	12961.8010039688
1977	14859.8490321891
1978	15275.9466104279
1979	15946.204916701
1980	16081.4539575687
1981	16052.1528418652
1982	15343.4282449855
1983	14682.2151768177
1984	14958.2862561547
1985	15199.6358955717
1986	15364.3636931262
1987	15791.0052616274
1988	16218.4468551705
1989	16958.2054226578
1990	15520.322617152
1991	15870.8412956161
1992	15728.885583879
1993	16213.2616175466
1994	16391.3918328431
1995	17957.9013184118
1996	16810.8038836679
1997	17566.1266617394
1998	17034.3887209058
1999	18399.5827225235
2000	19245.3340158332
2001	18285.9989441627
2002	17810.3777065771
2003	17521.3967054845
2004	19861.0711842342
2005	19437.5809226947
2006	19497.2828359566
2007	19919.4089971961
2008	19021.1213114088
2009	17930.909593144
2010	17276.4122234837
2011	17238.230368741
2012	18432.5606462062
2013	18680.0567060958
2014	18674.5180571769
2015	18620.3027604846
2016	18951.8772352232
2017	18478.5521010683
2018	17980.0460441169