Year	constant 2010 US$
1991	8399.06545771414
1992	8261.19177037625
1993	8040.69141225092
1994	7959.68183483407
1995	7859.19120400276
1996	7909.64343151901
1997	8019.09117484091
1998	7982.71927288297
1999	8081.46187104602
2000	8303.21229039188
2001	8401.85074799892
2002	8582.14930531016
2003	8748.8886951217
2004	8950.22080901619
2005	9279.896661222
2006	9595.78425632228
2007	10167.3537167476
2008	10498.4983202031
2009	10537.1002222304
2010	10868.8310341727
2011	11189.1679368278
2012	11470.335873543
2013	11715.0103436142
2014	11908.1559626403
2015	12000.8501917608
2016	12226.9108349707
2017	12535.9820247242
2018	12981.6446698727