Year	constant 2011 international $
1990	28669.4954783618
1991	28194.2929869928
1992	27969.3719123455
1993	28813.1035134056
1994	29644.6393317539
1995	30411.701168612
1996	31178.9368740762
1997	32055.0211775378
1998	33174.4998403259
1999	34461.6780911452
2000	35392.589527158
2001	35592.787014827
2002	36567.9378467547
2003	37197.9761613101
2004	38260.3873683081
2005	38968.6137033081
2006	39470.9995540558
2007	40733.135880066
2008	41385.3926060226
2009	41326.3947124107
2010	41529.7844367051
2011	41965.3584189919
2012	42847.7721932252
2013	43218.2609881052
2014	43672.1303729673
2015	44053.7311774575
2016	44605.6496773446
2017	44888.0199908538
2018	45439.3071629835