Year % of GDP 2008 37.51718538584541 2009 41.69057226219888 2010 29.56359927675797 2011 27.130890590894897 2012 32.183787335053545 2013 33.20863498412602 2014 33.0174927862044 2015 33.13838461538487 2016 42.060432456559276 2017 37.36802275825993 2018 32.84471434615448 2019 32.16703189086864 2020 2.993243595874548