Year % of GDP 1986 16.044336615094394 1987 17.106332946554186 1988 19.342448120884004 1989 21.209186916451216 1990 21.648222885435974 1991 21.30972446084067 1992 32.16571897017453 1993 28.437007321695635 1994 25.801493821144 1995 25.863397728951178 1996 24.759295799429363 1997 24.742323088985057 1998 24.111759958704898 1999 26.07854878539059 2000 28.117764587031747 2001 28.57856154476223 2002 29.443881723205678 2003 31.630253110268075 2004 33.7216127788009 2005 32.893852546179495 2006 32.62073258586315 2007 32.281166553923335 2008 31.758263877217885 2009 27.013482492239437 2010 28.041363601701658 2011 28.34356954514926 2012 27.813227575156706 2013 27.447181124392873 2014 27.17002784158974 2015 25.592160663780973 2016 25.1961218894108 2017 25.556644702317794 2018 26.180501783855558 2019 26.021318493283413 2020 24.5565333369224 2021 25.85093160243877 2022 26.50915320668494 2023 26.10959259675366