Year % of GDP 1998 95.93730378661557 2008 18.48675477488002 2009 23.304673258171995 2010 22.425896557095633 2011 21.883690823958 2012 21.550438027483985 2013 20.71328185483928 2014 23.131050357466357 2015 24.413371337020337 2016 25.297953751668793 2017 25.73547602902272 2018 25.157838572403865 2019 26.580200082159728 2020 33.45639880615034 2021 31.23161203020215 2022 28.143708201355025