Year	constant 2011 international $
1990	5277.94509821819
1991	5204.09607556214
1992	5733.57965667465
1993	5945.8416016619
1994	6032.59052157649
1995	6263.31314372159
1996	6571.71127938377
1997	7037.02757266212
1998	7381.19438039406
1999	7682.85579217447
2000	7930.48835675514
2001	8006.89431684128
2002	8251.04206850671
2003	7828.92380027952
2004	7775.98072140833
2005	8664.85716742687
2006	9373.22389183497
2007	9926.54391641847
2008	10265.3836622887
2009	10233.356093499
2010	10955.4448281546
2011	11137.1495878253
2012	11289.9982290399
2013	11613.4224117916
2014	12334.0279679105
2015	13127.1479550928
2016	13800.9551976527
2017	14197.293696738
2018	15074.2584378471