Year Percent of GDP 1991 30.404 1992 29.509 1993 22.531 1994 22.862 1995 25.375 1996 22.68 1997 21.706 1998 21.24 1999 23.313 2000 19.17 2001 19.008 2002 18.702 2003 17.494 2004 19.314 2005 20.153 2006 20.591 2007 22.293 2008 26.975 2009 25.953 2010 24.602 2011 22.299 2012 21.769 2013 21.433 2014 23.493 2015 31.914 2016 30.799 2017 32.068 2018 35.506 2019 29.902 2020 29.635 2021 29.282 2022 28.94 2023 28.719 2024 28.443