Year	constant 2011 international $
1990	2261.93339177079
1991	2249.96972722924
1992	2232.71426622643
1993	2176.56343852311
1994	2117.04558922184
1995	2176.80291396842
1996	2193.61599671306
1997	2205.28206859832
1998	2289.14388630768
1999	2364.88241377587
2000	2380.50348715572
2001	2437.50980004257
2002	2387.71004489014
2003	2495.48824151126
2004	2581.90052654873
2005	2660.11300902546
2006	2662.86555376455
2007	2721.81825945234
2008	2763.84848272238
2009	2725.21256617978
2010	2749.08954339019
2011	2696.20837567743
2012	2754.11743831726
2013	2751.96429542182
2014	2845.59000950335
2015	2932.93321561142
2016	3018.15158416218
2017	3139.34369299779
2018	3255.74416456508