Year	constant 2011 international $
1990	36812.545744692
1991	36284.5822327347
1992	37045.3301198376
1993	37566.4682323355
1994	38603.6512007035
1995	39170.6567138861
1996	40178.2026874966
1997	41462.8014609326
1998	42818.852352143
1999	44342.0016103341
2000	45661.2686667505
2001	45662.934837157
2002	46029.1989963627
2003	46941.0032903554
2004	48275.3861039114
2005	49512.9267885198
2006	50437.8062347791
2007	50897.7312378343
2008	50349.715321356
2009	48644.1511098135
2010	49479.2486787465
2011	49883.1139837344
2012	50632.4434476009
2013	51208.8924277934
2014	52080.7925682245
2015	53187.5733737803
2016	53631.7576241352
2017	54470.796669452
2018	55681.0445771107