Year % of GDP 2011 14.312195820350512 2012 14.258036305607414 2013 15.149042929247777 2014 14.969415489108357 2015 15.06509283486862 2016 14.334919157863604 2017 14.27213208421396 2018 16.323394623602486 2019 16.739481636525746 2020 21.01230776852532