Year % of GDP 1994 18.067034783526186 1995 18.41111246496893 1996 21.817808540591273 1997 22.147454651843184 1998 22.29952308373076 1999 23.43369544858588 2000 25.475241097922847 2001 27.884207108424707 2002 27.723718994319142 2003 22.83266129032258 2004 26.99267884686407 2005 27.024601517841468 2006 26.161584054746367 2007 28.206406795398664 2008 25.0711315386299 2009 28.973372744474812 2010 25.83070805143831 2011 25.856196529621585 2012 25.61269289997051 2013 25.020901927416674 2014 25.184242692838303 2015 25.01001975322779 2016 23.532657379879783 2017 20.750868055555554 2018 21.991079218018506 2019 20.660110310210992 2020 23.433365310944712 2021 23.799215859517368 2022 20.489942866087503 2023 20.2123440041848