Year % of GDP 2010 25.72355285763633 2011 26.040899065017232 2012 25.94107822823441 2013 26.769404102766213 2014 26.976168159306496 2015 28.886435197402363 2016 28.821723260606447 2017 28.24664263741415 2018 27.98738033723608 2019 27.7610806647436 2020 31.10249959016374 2021 27.249565321315234 2022 28.521180913566667