Year % of GDP 2011 6.88081098040948 2012 8.759649166099392 2013 4.339874795937545 2014 3.8527250833367477 2015 2.74696825866441 2016 3.576986174180334 2017 1.4142547444142954 2018 2.463445650461522 2019 0.331876199231459 2020 -1.8914179625407708