Year % of GDP 2005 36.57464566821554 2006 38.49938483018357 2007 44.2772613961667 2008 49.87642524486415 2009 48.31270909439475 2010 45.243764229706166 2011 47.09664422275801 2012 48.71228526587188 2013 51.0152535624497 2014 54.379000294332144 2015 56.58110165280935 2016 60.13293123517916 2017 61.103578505064924 2018 61.67503654324362 2019 58.04995393555904 2020 62.50723383998663 2021 59.32765144662394 2022 55.22317582194186 2023 53.69790371789921