Year % of GDP 2010 3.4794499874115 2011 3.6081199645996103 2012 3.47949004173279 2013 3.57199490070343 2014 3.6717050075530997 2015 3.67008996009827 2016 3.09477996826172 2017 3.78976988792419 2018 3.0132200717926 2019 3.540524959564205