Year % of GDP 2011 22.064292399777468 2012 20.001170976430334 2013 20.779104945011408 2014 20.80569794411015 2015 20.226523471933568 2016 20.83524302369586 2017 22.35289203663638 2018 21.771386217343583 2019 22.868465664494085 2020 21.910187797787607 2021 21.747172846309876 2022 21.073301861065605 2023 19.334425675557316