Year	constant 2011 international $
1990	1524.89357534074
1991	1505.09249893011
1992	1475.96173452455
1993	1466.81149570016
1994	1437.95067779171
1995	1470.00241436604
1996	1506.94889396185
1997	1536.68602983697
1998	1560.05608506232
1999	1589.25052251372
2000	1620.41560436738
2001	1665.53242608017
2002	1690.66541492924
2003	1739.62614568062
2004	1801.78302257888
2005	1880.94696022797
2006	1963.25392730401
2007	2057.64026313941
2008	2140.65516644496
2009	2197.92549004043
2010	2286.59223474343
2011	2327.96173463284
2012	2392.11264056819
2013	2486.82760915411
2014	2571.61151791583
2015	2627.99177434546
2016	2692.70505044805
2017	2788.5202277556
2018	2870.08233882087