Year Percent of GDP 2000 68.946 2001 52.422 2002 53.405 2003 50.795 2004 51.489 2005 45.982 2006 41.411 2007 34.378 2008 30.24 2009 23.638 2010 24.673 2011 28.432 2012 26.154 2013 22.278 2014 28.337 2015 24.189 2016 26.413 2017 28.462 2018 28.796 2019 30.87 2020 31.353 2021 31.904 2022 32.318 2023 32.919 2024 33.517