Year % of GDP 1991 28.086810983114596 1992 25.42830584285378 1993 25.939487209963573 1994 27.19012341460283 1995 26.78328192509451 1996 28.37227064453011 1997 28.99450583352097 1998 31.74571428736782 1999 28.378655461403728 2000 27.944731117851884 2005 58.875739644970416 2006 56.61325748286473 2007 57.45546809376597 2008 58.03964776728739 2009 51.675077705215436 2010 54.043882112225916 2011 56.231985424763245 2012 57.88068197936662 2013 56.06196755855126 2014 56.23245789442254 2015 55.630468635433616 2016 53.616494942779326 2017 54.57769050381779 2018 65.01466285120674 2019 63.30611240240034 2020 46.44368641196556 2021 51.637608424472745 2022 67.23096625569288