Year % of GDP 1991 54.95038859331968 1992 57.77583980565987 1993 59.79995350526573 1994 58.153095514693334 1995 53.99203595727084 1996 53.08430346636377 1997 51.50079913430889 1998 51.93840398252656 1999 54.31706993897167 2000 54.42863026953062 2001 53.97195867183593 2002 54.57829502923018 2003 56.314060666248444 2004 54.914957840714706 2005 54.688455826842144 2006 53.228097338598836 2007 54.258602065783954 2008 53.52460173863109 2009 53.47344285853476 2010 52.66559221757044 2011 52.88653083330197 2012 53.77314005892616 2013 52.18160785503301 2014 50.09766433823049 2015 49.041345751275706 2016 50.084782730340315 2017 50.09331820945449 2018 49.24811998881685 2019 49.213200006955546 2020 49.47442302707219 2021 48.26894140359845 2022 49.8286929355896 2023 49.510054033064435