Year	constant 2010 US$
1991	11259.6875076013
1992	11051.8667826329
1993	10661.6655491225
1994	10250.1001983822
1995	10136.2107141589
1996	10071.7878773281
1997	10169.0465841999
1998	10323.934921214
1999	10482.5760679483
2000	10793.1715102061
2001	11206.4650172558
2002	11600.4086406332
2003	12253.17641118
2004	13194.1611514495
2005	13990.9879725785
2006	14231.6610208922
2007	13976.6797724368
2008	14262.2792569769
2009	13729.093926314
2010	13636.4420980681
2011	13532.5582794872
2012	13483.8590597617
2013	13585.5238606834
2014	13145.7455993923
2015	13028.9470455112
2016	13149.8349527103
2017	12938.8664877682
2018	12906.8092736879