Year	constant 2010 US$
1970	20314.3475390707
1971	21058.5192945699
1972	22094.7425843845
1973	23396.8461093823
1974	24381.3361714914
1975	23831.6591009815
1976	25138.3056246905
1977	25206.241845885
1978	25873.1885716802
1979	26350.335625484
1980	27436.3478722026
1981	27402.2846066782
1982	27457.6932822651
1983	27526.9491579142
1984	28267.5039582282
1985	28813.7463239001
1986	29345.4180006759
1987	30081.7588912482
1988	31397.0123390185
1989	32285.94788768
1990	33245.9135972429
1991	33851.9930612751
1992	34225.0546865821
1993	34091.5712388843
1994	35339.8928863055
1995	36020.9349764728
1996	36565.0510404026
1997	37868.1715538367
1998	38534.6723562283
1999	39770.8657984365
2000	41207.6970614321
2001	41110.3828668138
2002	41593.9042130593
2003	41814.5702006051
2004	42916.8095572802
2005	43506.2230028762
2006	44381.7262650241
2007	45556.689344343
2008	45999.3397553322
2009	43645.589129653
2010	45778.9950967395
2011	45039.7589609195
2012	45498.4193056946
2013	45026.4957487799
2014	44965.7550698322
2015	44928.5826803126
2016	45644.3314282368
2017	46767.1303900401