Year % of GDP 2000 38.9369794050343 2001 31.4184216335541 2002 30.7790075512406 2003 35.8629812834225 2004 222.877591973244 2005 211.272708113804 2006 194.692314566577 2007 236.390968681719 2008 144.728505214368 2009 94.9470022624434 2010 92.6347847847848 2011 94.4603419516264 2012 89.2538037486218 2013 96.4135637430714 2014 108.536513994911 2015 106.548662259994 2016 100.259806347256 2017 98.7056891663407 2018 94.767620806402