Year % of GDP 2010 94.67613298997456 2011 80.17672678993556 2012 64.69031955412346 2013 58.231105441511524 2014 51.3379397660236 2015 48.30676840905016 2016 46.702332128981524 2017 42.12058115136234 2018 36.606169072479524 2019 34.54369951344769 2020 33.710333316483705 2021 31.416298428987172 2022 29.1432957381258 2023 28.0087899171727