Year	constant 2010 US$
2003	15645.9456132553
2004	17086.7188105523
2005	18178.8011952545
2006	18737.7083663158
2007	19033.4877002947
2008	19129.1317684067
2009	19269.733647513
2010	19000.7849048953
2011	19077.679877463
2012	18929.2740631847
2013	18827.9489817407
2014	19010.8478364522
2015	19107.0240483229
2016	19304.0612131452
2017	19768.2057681725