Year	constant 2010 US$
1995	17044.3040056197
1996	17646.4015383813
1997	18082.5278782066
1998	20106.3452795381
1999	17270.0775020306
2000	18007.6774924893
2001	17121.8323961138
2002	16980.513718555
2003	18918.4510125199
2004	22564.7525978892
2005	17778.3995200989
2006	14577.1021743203
2007	16599.2211511743
2008	18257.0106713931
2009	15780.3694605625
2010	18861.9677256449
2011	22501.8277106714
2012	18203.1857443677
2013	18328.3645104417
2014	23934.4868769395
2015	25119.2633454849
2016	26872.9937765649
2017	29900.2758077446
2018	25305.6169870925