Year constant 2010 US$ 2005 294602434.016058 2006 287675164.595941 2007 284909616.004042 2008 267279682.793807 2009 239520031.44482 2010 238926800 2011 248693202.680144 2012 257419836.028054 2013 250323739.038666 2014 273914153.287098 2015 282197618.163472 2016 304381586.243979 2017 308608688.732779