Year % of GDP 2008 19.886361785695232 2009 22.75569281739718 2010 24.027355783866625 2011 27.47978399563495 2012 26.659943792151108 2013 24.225640538856045 2014 26.200698422006376 2015 25.496788019385335 2016 26.95279004667354 2017 30.155455936645335 2018 33.81810067040989 2019 34.28945480154638 2020 23.783450950168028 2021 34.81541457384846 2022 40.410716358358805 2023 44.65659147515547