Year % of GDP 2010 16.609461209202784 2011 20.59378320387933 2012 25.7682014022658 2013 31.947308184990504 2014 20.658086836906147 2015 28.521619417257284 2016 27.83217805435611 2017 30.22049714289126 2018 38.15147125519789 2019 36.52506732685109 2020 38.97343440173985 2021 30.33687145363006 2022 24.88706089797061 2023 28.077634362881877