Year Percent of GDP 1996 32.931 1997 32.98 1998 33.648 1999 34.401 2000 31.163 2001 33.063 2002 34.525 2003 35.849 2004 35.338 2005 36.261 2006 35.665 2007 34.906 2008 35.898 2009 33.943 2010 36.086 2011 35.109 2012 34.704 2013 34.494 2014 32.686 2015 28.421 2016 30.856 2017 30.768 2018 31.309 2019 30.965 2020 30.892 2021 30.831 2022 30.855 2023 30.859 2024 30.82