Year % of GDP 2014 151.59438187660518 2015 154.65700422458445 2016 158.77680927339262 2017 156.9119059331187 2018 157.3292868375069 2019 159.9449633413294 2020 165.23589676425036 2021 160.0155040063915 2022 151.273477667907 2023 145.34775555297128