Year	constant 2010 US$
1995	12711.4251369025
1996	13093.618710963
1997	13750.6126628838
1998	14223.8759085647
1999	15080.2965877781
2000	15102.0480883457
2001	15763.3576579332
2002	16479.7192424532
2003	16982.542781467
2004	17479.7159009862
2005	18004.204152124
2006	18887.8931883281
2007	20095.9049737738
2008	20456.0726837287
2009	18855.9125239047
2010	18452.0731387797
2011	18327.46378189
2012	17359.5684900722
2013	17258.704156407
2014	18108.071326744
2015	18171.3748735996
2016	19035.2615623559
2017	20219.9098159662