Year Percent of GDP 1995 8.915 1996 7.359 1997 6.138 1998 5.453 1999 5.964 2000 5.114 2001 4.779 2002 5.697 2003 5.623 2004 5.062 2005 4.549 2006 4.404 2007 3.664 2008 4.487 2009 7.038 2010 6.551 2011 6.067 2012 9.733 2013 10.161 2014 10.51 2015 9.854 2016 9.163 2017 8.747 2018 8.05 2019 7.613 2020 7.184 2021 6.778 2022 6.41 2023 6.082 2024 5.791