Year	constant 2011 international $
1990	8975.29691620712
1991	8951.81714685884
1992	8968.51812923226
1993	8994.33365827961
1994	9120.43986258057
1995	9280.04307826963
1996	9498.64599904791
1997	9736.15497858749
1998	9842.58601328097
1999	10054.6479750409
2000	10394.0717647242
2001	10505.4873885248
2002	10663.2044738266
2003	10927.7301442141
2004	11362.2720531969
2005	11753.6847028561
2006	12226.5523559211
2007	12720.0238350884
2008	12923.7042868617
2009	12722.1494801391
2010	13221.383642217
2011	13584.8072397113
2012	13872.6533827942
2013	14179.4197613405
2014	14506.0834498806
2015	14825.6837063004
2016	15149.3420189216
2017	15543.340480474
2018	15941.2324125559