Year	constant 2010 US$
1970	15601.2160329894
1971	16068.4302376509
1972	16791.6216785756
1973	17631.5671767259
1974	17599.1298049848
1975	17366.8190974636
1976	18114.6905001088
1977	18563.2143388948
1978	19246.0804858343
1979	19775.5357720928
1980	19689.9994896211
1981	19352.1635131673
1982	19423.1609537325
1983	19681.1790945571
1984	20118.1607857084
1985	20593.8823448396
1986	21584.6286348527
1987	22254.2434627151
1988	23186.0043437372
1989	23935.6133477994
1990	24667.9554506372
1991	25121.6256796418
1992	25400.3248949633
1993	25117.4135222675
1994	25613.5771723291
1995	26273.3927948482
1996	26650.775515043
1997	27277.0865196872
1998	28136.8531779
1999	28948.4510769142
2000	29598.1512223321
2001	30004.2397391026
2002	30110.8283435287
2003	30206.3276416239
2004	30918.4879806099
2005	31069.7193073551
2006	31853.6547782827
2007	32580.5243448464
2008	32062.7415862674
2009	30671.840149222
2010	31127.8006329334
2011	31453.6993173141
2012	30984.3497601839
2013	30871.0047518629
2014	31273.0819356363
2015	32013.5747115532
2016	32704.2401153998
2017	33406.245024479