Year	constant 2011 international $
1990	11445.6660152543
1991	10054.0514266013
1992	9255.83620154824
1993	9410.14196934604
1994	9794.37198350147
1995	10425.9776745031
1996	10864.6530355653
1997	10367.6244470707
1998	10178.2261980941
1999	10155.8187766397
2000	10419.2582003116
2001	11117.0019204435
2002	11968.1050724769
2003	12336.9577435217
2004	13701.3158678119
2005	14429.7471633812
2006	15680.9037663144
2007	17065.4724093
2008	18967.2843046198
2009	18070.7040756282
2010	17469.1754478485
2011	17907.6746269812
2012	18361.2049364098
2013	19077.2257782884
2014	19801.9480324916
2015	20665.6363403955
2016	21782.1310204802
2017	23441.6422226294
2018	24544.0250806323