Year	constant 2010 US$
1991	19652.699561032
1992	19770.5475796409
1993	19529.2634079544
1994	19536.0342909393
1995	19374.9614829611
1996	19714.1351666835
1997	19885.7933482228
1998	19674.4942984045
1999	19637.2508182064
2000	19406.4715406887
2001	19521.1655239931
2002	20029.8972468437
2003	20068.3523194153
2004	20323.7269568144
2005	21251.4349223113
2006	22401.6784018685
2007	24277.6298220223
2008	23925.7714740978
2009	23476.0145028635
2010	24520.6297127776
2011	25059.9390869741
2012	25616.5338996129
2013	25452.0756562568
2014	25652.5043762114
2015	23701.5480855713
2016	23458.8608966725
2017	24067.6300906116