Year % of GDP 2010 61.632074393860236 2011 63.534125145678765 2012 62.866663698216485 2013 62.15061316882357 2014 61.8321237894427 2015 61.15756143060806 2016 60.94923543216717 2017 60.81201111796229 2018 60.50463487497954 2019 60.43238568512144 2020 60.471396936931946 2021 59.3821788385184 2022 59.077079910781585