Year % of GDP 1991 26.387959866220733 1992 34.450625869262865 1993 36.2925144834191 1994 35.33144648184162 1995 26.683208471869573 1996 22.6707881598155 1997 21.44593819953944 1998 20.817210433460374 1999 17.51295464650956 2000 19.80377906976744 2001 21.813188114123356 2002 20.19065679214822 2003 21.94263669304682 2004 21.095865124292395 2005 22.50653255343574 2006 24.542757929835865 2007 27.78116537479397 2008 27.39259138147331 2009 17.068408792851848 2010 18.372368004212085 2011 20.444003682242077 2012 19.61467922604133 2013 16.425761021687745 2014 13.396495716531762 2015 15.93331603424415 2016 21.724162361598864 2017 19.96473264196252 2018 18.588338854400554 2019 14.890357482830877 2020 8.93229932738453 2021 14.467452684893676 2022 12.113288620938578 2023 15.130735374532051