Year Percent of GDP 1995 55.114 1996 50.827 1997 49.413 1998 50.609 1999 48.561 2000 47.066 2001 47.101 2002 50.8 2003 48.941 2004 48.432 2005 49.334 2006 51.406 2007 49.789 2008 48.468 2009 50.326 2010 49.238 2011 49.448 2012 48.47 2013 49.297 2014 49.387 2015 50.028 2016 46.79 2017 46.899 2018 47.366 2019 46.662 2020 45.999 2021 44.809 2022 44.414 2023 44.05 2024 44.09