Year % of GDP 2010 25.45483809697717 2011 25.682585259328008 2012 25.63607288897942 2013 26.433145386872518 2014 26.568731740350657 2015 28.404479885197414 2016 28.425119273866578 2017 27.862658195240066 2018 27.61972114737709 2019 27.47478425408688 2020 30.778574769960272 2021 27.32848991137894 2022 28.274069215604904