Year % of GDP 2008 22.118173245369388 2009 22.643651548296596 2010 20.32242815584437 2011 22.63711053370394 2012 25.784391863892157 2013 26.481517164029956 2014 20.607512382974406 2015 21.667050137491863 2016 25.541837492687435 2017 29.281612746524033 2018 28.63559579920336 2019 28.879976867343903 2020 26.58324814874009 2021 27.2173661409533 2022 24.85025209077151 2023 26.634686203923803