Year	constant 2011 international $
1990	32831.576418501
1991	33150.6928239219
1992	33763.8244844369
1993	33821.5393264664
1994	35550.0912243272
1995	36597.5921187845
1996	37386.4916742285
1997	38503.0014842409
1998	39364.9705012971
1999	40537.8745751025
2000	41413.5510354086
2001	41935.2508725081
2002	42090.1044636553
2003	42283.2309007651
2004	43730.81537407
2005	44929.0543930213
2006	46715.6567028903
2007	46609.2115056507
2008	46378.5604242453
2009	43817.2613946244
2010	44726.4097144056
2011	45339.7138450567
2012	45340.502399302
2013	45982.82077191
2014	46714.2112454321
2015	47213.4679256714
2016	47729.0287089029
2017	48338.3338220904
2018	48852.0154322076