Year % of GDP 2012 48.284453913834064 2013 47.876819653616025 2014 50.81967157304044 2015 52.34448164889079 2016 49.320356209221494 2017 50.25093197362863 2018 50.582914348141415 2019 51.57625247356352 2020 56.0704473363389 2021 55.95067310288795 2022 55.61901741231266 2023 56.24478037253164