Year	constant 2011 international $
1990	1393.68466830083
1991	1369.65249351345
1992	1360.49372180258
1993	1336.36526068625
1994	1310.71250259741
1995	1324.01725158851
1996	1371.39182688885
1997	1406.92714209067
1998	1438.41871680738
1999	1431.15662634364
2000	1425.31735532274
2001	1443.85930470256
2002	1462.89136454236
2003	1496.10016136994
2004	1522.81273463543
2005	1559.17528557464
2006	1618.25657791173
2007	1679.35756890345
2008	1735.77290349836
2009	1750.88118519198
2010	1772.44041369063
2011	1841.11775421649
2012	1877.40463114459
2013	1866.45324769649
2014	1994.82307487053
2015	2062.35234677341
2016	2110.17734845117
2017	2158.41768689182
2018	2185.1019347609