Year	constant 2010 US$
1991	11675.9368365632
1992	11347.7067538834
1993	10946.6749008776
1994	10827.4415218651
1995	10578.0961126374
1996	10591.3380021178
1997	10724.3887858373
1998	10728.882433197
1999	10867.3754342504
2000	11184.2736858619
2001	11280.6293156052
2002	11567.5907963796
2003	11765.9132046084
2004	11982.5820804988
2005	12366.4131774264
2006	12879.5015955979
2007	13657.1632657655
2008	14100.5953681393
2009	14073.9086475191
2010	14615.0442259442
2011	15094.9353367382
2012	15509.099024572
2013	15804.6027509924
2014	16010.6513755005
2015	16141.1765099196
2016	16445.9764100686
2017	16912.7508239454
2018	17410.712092908