Year	constant 2011 international $
1990	11400.1652450239
1991	11289.8977162127
1992	11665.1979909179
1993	12357.1652239835
1994	11594.0043413503
1995	12310.1860565761
1996	13010.2406844642
1997	13776.040924636
1998	13874.0707311813
1999	13197.7409442683
2000	13862.0344313681
2001	12842.2040031259
2002	13468.0208387342
2003	14020.1725802283
2004	15160.9245088558
2005	16309.6681265582
2006	17252.4263991339
2007	17905.4483970864
2008	17842.2328207313
2009	16787.6268897334
2010	17959.2407217322
2011	19651.6784765047
2012	20259.4381321689
2013	21610.4852442043
2014	22343.497453361
2015	23311.6596919507
2016	23664.4312263351
2017	25024.0161400845
2018	25286.5831037917