Year	constant 2010 US$
1991	7154.43803824557
1992	6891.51454200114
1993	6914.12155607539
1994	6433.15964261353
1995	6783.05857050224
1996	7053.68040857002
1997	7539.74271778563
1998	7579.42690531201
1999	7421.04221617851
2000	7745.39227107224
2001	8145.22948108119
2002	8735.14700951752
2003	8613.32323228171
2004	9833.51378166773
2005	9570.24012955339
2006	9821.61464891357
2007	10048.6825598518
2008	10807.3316394991
2009	11101.8676625705
2010	10607.8150327807
2011	11237.3420252121
2012	10977.259252333
2013	11556.5098616792
2014	12676.627362862
2015	13044.1652937885
2016	13231.6881650016
2017	14134.3999859403
2018	14297.7735539295