Year	constant 2011 international $
1990	7502.81164024821
1991	7830.28543221153
1992	8242.60414407042
1993	8539.91413303571
1994	8702.61699576104
1995	9016.28005270959
1996	9374.22534393652
1997	9840.26941988647
1998	10306.3761294683
1999	10468.0731932412
2000	11219.2796712752
2001	11576.2493483045
2002	11680.2088778204
2003	12188.8711371751
2004	12673.8776436642
2005	12834.7959370532
2006	13506.3652800431
2007	14491.3647879511
2008	15055.9744231031
2009	15351.0330917405
2010	15783.3803578287
2011	16247.4125444564
2012	17590.4414932913
2013	18760.4112150809
2014	19421.2107300566
2015	20187.7595008468
2016	20893.0415632168
2017	21965.7838307651
2018	22724.2347860734