Year	constant 2010 US$
1990	18131.6500334784
1991	18461.7630951991
1992	17641.2542630253
1993	16652.4733299645
1994	16983.1965446688
1995	17256.4917291148
1996	18028.6966053568
1997	19000.6568205346
1998	20957.2015829197
1999	22212.6358646881
2000	22789.5761028069
2001	21868.9588104653
2002	21533.0094302204
2003	22663.6435081539
2004	24070.8494504018
2005	26403.5449846542
2006	26780.6738181757
2007	27840.6280128961
2008	25502.4632580639
2009	22222.064008445
2010	22172.7347962272
2011	22660.9950531816
2012	22975.8752272544
2013	22954.7532423502
2014	23427.715860697
2015	24238.5134254966
2016	25619.3670285813
2017	27042.7264040927
2018	27514.4637288777