Year % of GDP 1995 66.42987417026033 1996 66.9851453079949 1997 68.66508937727721 1998 69.30048396329357 1999 70.23380935494316 2000 69.7823054142334 2001 69.33562736124922 2002 68.40369361483003 2003 67.35606862220605 2004 66.82377048884554 2005 66.73697061712261 2006 66.99292463295978 2007 66.09960186914041 2008 66.36933932666356 2009 69.9769157365752 2010 71.6413802756644 2011 73.98561038771382 2012 74.94826464455257 2013 76.11391710558101 2014 75.82738324681306 2015 75.51759617742894 2016 74.56912910064976 2017 74.14245908985242 2018 73.26203183884546 2019 72.9850391259209 2020 74.16862811538924 2021 74.94196199157321 2022 74.30266767469489 2023 73.9934270980564