Year % of GDP 2000 2.23284006118774 2011 2.34999990463257 2012 2.45300006866455 2013 2.3510000705719 2014 2.44799995422363 2015 2.3989999294281 2016 2.60400009155273 2017 2.80699992179871 2018 2.56599998474121 2019 2.70099997520447 2020 2.86700010299683 2021 3.57299995422363 2022 3.17400002479553 2023 3.08599996566772