Year constant 2010 US$ 2002 17677.9394267118 2003 16365.7984222548 2004 17100.7357448629 2005 17835.0651684381 2006 17245.9438981174 2007 17364.529256858 2008 17783.0595404892 2009 17882.6250997106 2010 17661.3732721206 2011 17893.8273574186 2012 18505.1355255844 2013 18482.9623971843 2014 18538.7848270599 2015 18580.5011277485 2016 18747.2568804793 2017 18965.1727304872