Year	constant 2011 international $
1990	15481.0927679171
1991	15147.3424724862
1992	15670.5480744574
1993	16558.2725570996
1994	17234.1105200655
1995	17964.5702475191
1996	18834.7349672012
1997	19942.0058119279
1998	19676.5257124144
1999	20126.9796654401
2000	21989.7063489969
2001	22929.7999427127
2002	23201.6475523358
2003	22117.9991022821
2004	22728.3538095457
2005	24648.3197258273
2006	25109.1956509998
2007	24865.7563484646
2008	26255.352382751
2009	25154.8189126389
2010	24575.1710981188
2011	24795.5388173779
2012	24415.7002016391
2013	25523.0975442563
2014	26832.4960681414
2015	27178.8578191632
2016	27581.4123082745
2017	27679.0842560526
2018	28294.5713775399