Year Percent of GDP 2000 44.39 2001 43.353 2002 45.047 2003 48.951 2004 46.329 2005 39.962 2006 34.77 2007 31.87 2008 27.923 2009 28.353 2010 25.359 2011 22.992 2012 21.166 2013 19.96 2014 20.655 2015 24.041 2016 24.473 2017 25.415 2018 26.755 2019 27.179 2020 26.974 2021 26.448 2022 25.941 2023 25.491 2024 25.018