Year	constant 2010 US$
1994	14267.5978909002
1995	14427.8062646416
1996	15531.7404779078
1997	18385.3803683388
1998	18839.0757257979
1999	20323.4148501721
2000	22799.5176173089
2001	22901.7757577801
2002	23277.2696224206
2003	23271.7008550851
2004	25570.7692005372
2005	25941.3444029025
2006	25825.8874504494
2007	26064.524726931
2008	28274.1719585487
2009	29490.3945527459
2010	28696.0652433055
2011	29088.4384934978
2012	28989.8457205387
2013	31353.1084872477
2014	34325.6581684524
2015	35068.0035474322
2016	35121.1515636249
2017	35144.344949072
2018	30659.3240521896