Year constant 2010 US$ 2004 153168771.772107 2005 164107464.619314 2006 151900220.296725 2007 164987575.187004 2008 137071922.753286 2009 172361252.818746 2010 187355400 2011 142986998.623941 2012 143829646.041787 2013 167588666.291515 2014 155609345.584949 2015 168304021.035985