Year	constant 2010 US$
1971	4087.5472902851
1972	4150.85454688056
1973	4604.93429605253
1974	4732.58286246305
1975	4349.73631355013
1976	4152.35078458268
1977	4015.99643762102
1978	4105.38742544322
1979	4126.42986633025
1980	4433.84039911619
1981	4578.72645214085
1982	4470.3165795135
1983	4262.1999900869
1984	5049.16542663891
1985	4761.34617239757
1986	4729.77255192542
1987	4951.64775827506
1988	5118.0326664453
1989	5441.23519728595
1990	4034.53045686154
1991	4071.97300098134
1992	4047.11824516055
1993	4153.63950945067
1994	4121.94167944209
1995	4238.5977375809
1996	4290.10893715521
1997	4341.81652905695
1998	4329.98068926467
1999	4326.50681153187
2000	4486.38203524151
2001	4519.73550630547
2002	4791.90285451552
2003	4930.97447489951
2004	5124.5883297051
2005	5366.31406347843
2006	5700.23043634865
2007	5812.84737157842
2008	5568.81837323046
2009	5741.62163445455
2010	5883.21515655379
2011	6037.37625427229
2012	6061.4922037425
2013	6043.98667000217
2014	6077.83280869221
2015	6219.84521331159
2016	6120.62784889857
2017	6174.52261450687