Year	constant 2010 US$
1970	13943.5548475576
1971	14610.785306646
1972	14894.2057615235
1973	15318.0235000577
1974	15676.3212864304
1975	16414.9037442467
1976	17310.9429617135
1977	18319.4053991728
1978	17959.3077416471
1979	18650.0180950629
1980	18975.0369839851
1981	18967.0033112338
1982	19109.3999419946
1983	19423.4566731308
1984	19986.8800996124
1985	21765.4145879694
1986	22783.0162901115
1987	22536.6583563501
1988	21942.4398389746
1989	21718.5136680211
1990	21793.78556982
1991	22142.306225538
1992	22535.3403824809
1993	22910.2821887306
1994	23553.5058243123
1995	24277.9852105808
1996	25682.6359217901
1997	26340.884739115
1998	26925.2126641532
1999	27740.0086596295
2000	28712.8640956195
2001	29156.9807314154
2002	29909.6216418513
2003	30683.7305739767
2004	32164.7374598229
2005	33352.9205004797
2006	34726.7726288831
2007	36193.7668806299
2008	36344.5460856956
2009	35899.2891032135
2010	36788.6128834444
2011	37167.5180417492
2012	37956.4648217431
2013	38556.0515815579
2014	38920.4690357078
2015	39542.9836792815
2016	39706.9163800541
2017	40252.1923463775
2018	40782.7768538004