Year Percent of GDP 1995 77.349 1996 72.194 1997 64.498 1998 72.563 1999 73.069 2000 67.297 2001 64.001 2002 58.977 2003 66.866 2004 59.191 2005 59.457 2006 60.225 2007 59.264 2008 59.33 2009 63.587 2010 67.248 2011 65.399 2012 65.314 2013 59.765 2014 54.478 2015 55.94 2016 61.838 2017 64.397 2018 63.492 2019 59.782 2020 59.381 2021 59.061 2022 58.818 2023 58.414 2024 58.184