Year	constant 2011 international $
1990	844.342167576777
1991	896.598477820563
1992	874.806444566451
1993	880.89149248784
1994	868.463532306393
1995	893.240680831447
1996	964.586920602274
1997	997.364751381498
1998	1040.667437642
1999	1086.61619839277
2000	1075.39533703334
2001	1114.20225286606
2002	1129.74053824911
2003	1183.09487974235
2004	1200.41706167989
2005	1266.36153727954
2006	1305.92497128283
2007	1338.83837475586
2008	1393.69708816373
2009	1392.20028555341
2010	1423.37770598198
2011	1472.71584137964
2012	1521.45154039989
2013	1562.29994921861
2014	1582.33009760085
2015	1596.33458051647
2016	1642.4750341006
2017	1696.23413774975
2018	1755.59290827482