Year Percent of GDP 1992 25.651 1993 25.877 1994 26.078 1995 25.92 1996 24.717 1997 26.551 1998 34.647 1999 26.322 2000 25.496 2001 23.936 2002 25.909 2003 24.473 2004 25.105 2005 24.264 2006 23.652 2007 23.681 2008 24.996 2009 24.296 2010 24.718 2011 26.002 2012 26.191 2013 26.525 2014 27.187 2015 27.939 2016 28.089 2017 30.295 2018 30.41 2019 30.072 2020 30.129 2021 30.122 2022 30.136 2023 30.121 2024 30.128