Year % of GDP 2009 22.425143926014094 2010 21.824861228386183 2011 21.425366193316737 2012 23.840396688982995 2013 25.616213057431462 2014 25.357052367342337 2015 26.56815952069059 2016 25.946449334458837 2017 22.922704734817103 2018 21.96029564179781 2019 21.44959902473678 2020 21.656976828903833 2021 19.649972888325888 2022 16.656550721809303 2023 18.16725093630221