Year	constant 2011 international $
1990	1431.72202284721
1991	1449.180989842
1992	1409.43903270975
1993	1469.93346396958
1994	1442.97610923816
1995	1482.00109206689
1996	1499.65928681289
1997	1548.89519603828
1998	1576.68992948828
1999	1614.73676988483
2000	1658.6873606204
2001	1693.99059011456
2002	1712.83666551492
2003	1717.63891302516
2004	1743.28992730307
2005	1729.5985619249
2006	1742.71579791346
2007	1791.02332888505
2008	1838.30885533761
2009	1823.25877820227
2010	1804.67242568451
2011	1817.27707690608
2012	1840.39360315612
2013	1919.43708559948
2014	1987.89371201492
2015	1970.78241865637
2016	2000.82300941495
2017	2054.71333414815
2018	2134.58937891019