Year	constant 2011 international $
1990	48181.7557750506
1991	47147.5392941208
1992	46610.189795911
1993	46129.4418063966
1994	46344.2603525896
1995	46256.9705907555
1996	46301.8330422132
1997	47271.3555292296
1998	48540.2729292941
1999	49128.0335737854
2000	50775.9763390062
2001	51117.8874407516
2002	50815.1531556825
2003	50459.5029062084
2004	51505.0923669791
2005	52770.4689302242
2006	54531.9936996731
2007	56269.1565026942
2008	56755.8381307405
2009	54805.5792896896
2010	55866.3050707537
2011	56183.8325850081
2012	56149.6708620093
2013	56535.7400477582
2014	57218.0279263612
2015	57324.6790708698
2016	57610.0084565372
2017	57997.6434860466
2018	59019.2099791418