Year % of GDP 1996 19.377926315955417 1997 19.75336680920527 1998 16.73015749727266 1999 14.09370802356665 2000 13.666908903173672 2001 17.79488880506213 2002 17.446955087640557 2003 15.495655122513844 2004 15.199093762656945 2005 14.826391060712538 2006 14.51619698249283 2007 14.303722837197522 2008 14.662958256785839 2009 14.940501532663633 2010 13.332195310376733 2011 14.794353171378024 2012 15.61314674255497 2013 15.310235280488978 2014 14.840790714026841 2015 14.056862129339349 2016 13.55072517241918 2017 12.94596624117971 2018 12.022665859469138 2019 11.936348829934735 2020 10.884671205401892 2021 11.214646571960582 2022 11.654010812296093