Year	constant 2010 US$
1970	15966.3531714973
1971	16364.5213825274
1972	17070.8325133924
1973	17924.4948150769
1974	17386.7329506175
1975	17298.8221774095
1976	17933.9316391335
1977	18398.9034807561
1978	19130.6599971654
1979	19269.1551990711
1980	18976.0275882469
1981	19128.92133687
1982	19196.9810806801
1983	19504.996391656
1984	20298.6588174986
1985	20971.0406060048
1986	21694.3663194311
1987	22329.0155786869
1988	23374.1924801871
1989	23950.0372650935
1990	24394.5887100472
1991	24551.6551916401
1992	24886.4455265878
1993	24972.3393455514
1994	25610.2532279694
1995	26233.6613195421
1996	26883.3236541438
1997	27673.0459553939
1998	28416.060125081
1999	29107.9308641497
2000	29917.3883527383
2001	30224.827387618
2002	30448.6901561534
2003	30889.0681251875
2004	31739.2036077376
2005	32280.9162254284
2006	33034.7214227719
2007	33438.6211191065
2008	32661.9758139295
2009	31468.3081672964
2010	32362.9378551599
2011	32820.2990753455
2012	33252.0797277781
2013	33488.0332831083
2014	34094.4962587181
2015	34765.7902194579
2016	35052.1193551502
2017	35780.4297923513