Year % of GDP 1982 26.16646339155694 1983 26.033930843866862 1984 27.063677880232387 1985 28.018239694233422 1986 27.102260529360425 1987 28.677212151114656 1988 29.715236189387067 1989 29.254947357503053 1990 28.133307937265826 1991 28.853463211545563 1992 29.912549382426675 1993 30.918962720390297 1994 30.993957392496444 1995 29.352029697955338 1996 29.056294917186158 1997 29.049049785354722 1998 28.13555071206725 1999 27.590192024035353 2000 28.39667999488006 2001 28.565381971934695 2002 29.406766325072564 2003 30.979905592443124 2004 33.065821492838026 2005 33.6716185140814 2006 35.402272837196044 2007 36.2309231322909 2008 36.695420849373136 2009 34.33970076097033 2010 35.660454563079924 2011 35.01572906649451 2012 34.2307381197563 2013 33.18607092295689 2014 32.976104825727106 2015 32.03546141113991 2016 31.382044604501367 2017 31.949987495988697 2018 32.084368536645854 2019 31.37845141407026 2020 31.16115926905223 2021 32.888202469642025 2022 33.118145037171715