Year % of GDP 1991 22.738086470730202 1992 21.585722207603233 1993 20.51148643233813 1994 21.86295016110536 1995 21.775733776659674 1996 22.874869863056972 1997 23.24748487757172 1998 24.149008438143802 1999 25.0810609040772 2000 25.50240722566979 2001 24.852390136829733 2002 24.71441348699677 2003 23.625182442393786 2004 24.04047757516926 2005 23.833932744134245 2006 23.492232149396216 2007 23.69264302111678 2008 23.344081000680223 2009 22.63965805525449 2010 20.06946092560065 2011 19.53729600764617 2012 19.14969708032633 2013 20.79615897560031 2014 22.009807921771714 2015 22.172208703547724 2016 19.494802421189515 2017 22.14800463310314 2018 24.730914143985565 2019 27.002706936565062 2020 26.515915932950374 2021 27.23621096699307 2022 27.885003984579875 2023 26.347719948162503