Year	constant 2011 international $
1990	1590.42289129226
1991	1416.05096852346
1992	1416.24141485071
1993	1409.49320478594
1994	1353.69389714101
1995	1334.1755520797
1996	1333.53809765565
1997	1358.02407268597
1998	1374.94695649157
1999	1406.06778304899
2000	1418.14682966331
2001	1464.09823071966
2002	1235.60338785122
2003	1318.6577167481
2004	1341.6518702371
2005	1368.35693492387
2006	1397.46116942512
2007	1452.0484477464
2008	1514.91422328431
2009	1406.90275308194
2010	1370.88122752605
2011	1346.07542540415
2012	1326.29360362104
2013	1320.179123665
2014	1332.13870205296
2015	1323.2281737252
2016	1338.76850617836