Year % of GDP 2006 20.383951822916664 2007 17.970540814026748 2008 12.99061744248202 2009 8.734392681200074 2010 10.489959197288412 2011 13.743691471234406 2012 14.533720623421306 2013 13.00156808063872 2014 12.746791868561868 2015 14.169214181950473 2016 12.260830387227486 2017 13.163798713511458 2018 12.302102047402228 2019 11.297972659832693 2020 12.397726234585656 2021 13.205841888156655