Year % of GDP 2001 139.566759180678 2002 138.099751503877 2003 137.079744874059 2004 134.166174877346 2005 132.598376259312 2006 127.361704794735 2007 120.480139103862 2008 122.282823393475 2009 128.450989318289 2010 164.797562847376 2011 161.966764331587 2012 156.924945436616 2013 136.886322463768 2014 139.462905679254 2015 134.113537518942 2016 133.097713426695 2017 128.037585358858 2018 125.883756645009