Year % of GDP 2008 34.39378103112322 2009 41.99360270710819 2010 35.55186335301733 2011 34.45241711497135 2012 33.042829196475914 2013 29.40276740645321 2014 31.692165841499637 2015 32.157631595931996 2016 32.98862298995465 2017 32.25978619844908 2018 31.540072719588167 2019 33.64478234864051 2020 40.665022132474775 2021 38.93287708400712