Year % of GDP 2011 13.906049619353222 2012 16.538404427316948 2013 16.113063722322988 2014 17.250071197000832 2015 19.947841820146415 2016 15.579569352060684 2017 15.08806861135414 2018 15.320960902528604 2019 16.06345791973277 2020 16.475916771198257 2021 12.438184357041195 2022 14.138767164904278