Year % of GDP 1994 25.025923271464652 1995 22.988222266141268 1996 22.77061293800188 1997 20.190138764430614 1998 20.1738288404955 1999 23.08659331092015 2000 26.82583417208081 2001 25.486846030028985 2002 24.243850086593127 2003 23.548225803614574 2004 24.764974489934033 2005 25.705175267496067 2006 26.42870316436942 2007 26.40144200914481 2008 26.32138879804979 2009 21.19345259941408 2010 23.438783077365795 2011 25.183380574575438 2012 24.298926207852553 2013 23.163815469138687 2014 23.66272821710219 2015 24.81297772856614 2016 23.674663684349856 2017 24.439852849104238 2018 26.40345602914845 2019 24.972214781263364 2020 24.69391372764318 2021 27.443502077526542 2022 28.305602190529896 2023 25.988205860842864