Year	constant 2010 US$
1970	20073.0016160935
1971	20523.9783919081
1972	21196.4597190695
1973	22406.9354704579
1974	23259.7561595807
1975	22416.6011646323
1976	22425.5102188054
1977	21475.794752381
1978	21537.011974381
1979	22095.538844759
1980	22351.2398393739
1981	23302.0761593203
1982	23286.2351494878
1983	23773.673545688
1984	24698.6804435532
1985	24942.9596268612
1986	25534.9349390224
1987	25561.6032614955
1988	25401.2269141068
1989	25320.3511131478
1990	25126.051971395
1991	23676.6082871344
1992	23687.753575171
1993	24916.061843965
1994	25845.5236507012
1995	26672.5508812286
1996	27204.4072164488
1997	27398.4560164751
1998	27371.492211132
1999	28713.5650241227
2000	29374.1130090945
2001	30214.635071092
2002	31084.0743588956
2003	31867.3037737616
2004	32663.7153326902
2005	33369.8054955148
2006	33903.034877919
2007	34600.4452219395
2008	33961.9017000713
2009	33552.2125363754
2010	33692.0108346543
2011	34216.55833628
2012	34786.9739837258
2013	35409.7547999752
2014	36174.9052290675
2015	36770.4559394367
2016	37319.2861169023
2017	37678.3568532009
2018	38000.1298806468