Year % of GDP 1989 30.933485514628074 1990 23.522594662837125 1991 21.409400660457596 1992 22.56862560129724 1993 18.227646494884393 1994 18.086385520041574 1995 15.290925952128879 1996 15.503859109304704 1997 14.587564449517926 1998 18.39721631812675 1999 16.51287717245174 2000 18.779996980553264 2001 19.06848254532936 2002 20.041557749560965 2003 19.416954958764595 2004 21.20935286765211 2005 22.62209018408389 2006 24.22498531472999 2007 23.910014380013177 2008 24.567330436776693 2009 22.20051986901305 2010 23.15126074101431 2011 25.195679283557148 2012 24.58861968734961 2013 24.146813642415086 2014 25.389561501279196 2015 24.84125855235302 2016 24.182983299496737 2017 25.378673175157246 2018 27.039584269312645 2019 25.527352075955463 2020 24.811644688399518 2021 27.825968950013173 2022 27.202276400461933 2023 23.839189858196168