Year Percent of GDP 2004 15.423 2005 13.201 2006 12.906 2007 12.96 2008 15.813 2009 20.424 2010 20.337 2011 19.476 2012 23.31 2013 34.975 2014 32.863 2015 33.503 2016 35.246 2017 76.641 2018 77.012 2019 77.123 2020 77.855 2021 78.022 2022 78.109 2023 78.165 2024 78.303