Year	constant 2011 international $
1990	28402.8227616309
1991	28578.2697249865
1992	28886.7058661495
1993	28971.1337790095
1994	29580.4906315609
1995	30213.8494280755
1996	30921.3103049331
1997	31809.2695171462
1998	32477.4577936152
1999	33467.6908416311
2000	34681.2211760095
2001	35072.5883206076
2002	35438.3606145116
2003	36053.73897344
2004	37097.0693794643
2005	37938.7187848151
2006	38887.9288027938
2007	39671.5454651055
2008	39498.3727376683
2009	38001.1997793572
2010	39021.7814392362
2011	39589.0955713774
2012	39853.3007481162
2013	40204.3156375672
2014	40772.6121820457
2015	41404.279080794
2016	41876.0696558894
2017	42774.1167586093