Year constant 2010 US$ 2006 189998322.624775 2007 202619004.211303 2008 159807393.407446 2009 145983725.251193 2010 172988045.073767 2011 193130358.664297 2012 208852230.480866 2013 225154085.61297 2014 241321004.090575 2015 269677687.484443 2016 284303476.951406 2017 299052080.907017 2018 306868349.235869