Year % of GDP 1993 29.469112573743338 1994 29.948248798944515 1995 31.276194550503988 1996 30.35520047519631 1997 27.922712676553076 1998 29.926656677371955 1999 28.39388702660794 2000 28.740245482722482 2001 28.698228001304372 2002 26.80384303899909 2003 25.362093925068173 2004 25.91548467196052 2005 26.781761410020906 2006 26.366360695178372 2007 27.829500627491825 2008 27.10744693344951 2009 23.28320597341765 2010 22.6566432862838 2011 22.460637447275467 2012 24.02350514759211 2013 24.11068078651927 2014 25.310453377139602 2015 27.09377506241475 2016 26.349369096740055 2017 27.27576794294217 2018 26.947497749071314 2019 26.953305672436876 2020 27.424516956010127 2021 28.607233308359238 2022 28.113011729251685 2023 28.92630389393992