Year	constant 2010 US$
1977	2618.86629983226
1978	2861.89344421821
1979	2315.55408610704
1980	2612.93415637844
1981	2896.08971256542
1982	3027.9344125213
1983	3127.01783585329
1984	3286.13107105373
1985	3362.41915044199
1986	3633.41195683938
1987	3899.74331417667
1988	4242.00692502352
1989	4262.93388227662
1990	4513.32778867403
1991	4577.02335024058
1992	4658.68245944882
1993	4740.12473385013
1994	4727.58656892178
1995	4867.07245123873
1996	5029.65163585983
1997	5164.09799323213
1998	5390.59417714047
1999	5436.83144546702
2000	5578.80534117835
2001	5574.4213429445
2002	5403.07674589887
2003	5724.79629036403
2004	5875.80501451071
2005	5897.02030796361
2006	6160.49012704066
2007	6544.78667771128
2008	7007.65651894747
2009	6923.33795591502
2010	6967.24531354346
2011	6947.93586307906
2012	6869.62567862633
2013	6822.97606623685
2014	7115.5158760137
2015	6924.48811325311
2016	7086.78212998457
2017	6397.83468953572
2018	6416.92196949845