Year Percent of GDP 1995 46.51 1996 46.459 1997 43.885 1998 43.161 1999 43.434 2000 44.039 2001 43.052 2002 41.973 2003 41.825 2004 42.105 2005 41.55 2006 42.121 2007 44.753 2008 44.85 2009 45.766 2010 44.763 2011 44.034 2012 46.071 2013 46.677 2014 46.788 2015 48.125 2016 45.143 2017 44.689 2018 45.07 2019 44.723 2020 44.069 2021 42.977 2022 42.574 2023 42.273 2024 42.137