Year Percent of GDP 1990 18.758 1991 23.053 1992 21.641 1993 21.526 1994 22.38 1995 27.717 1996 24.343 1997 31.104 1998 32.384 1999 26.611 2000 31.429 2001 31.901 2002 29.447 2003 29.002 2004 27.867 2005 28.745 2006 29.807 2007 27.451 2008 29.923 2009 29.368 2010 25.789 2011 23.483 2012 30.154 2013 31.605 2014 29.735 2015 21.136 2016 17.138 2017 16.415 2018 18.205 2019 17.866 2020 18.687 2021 19.135 2022 19.059 2023 19.401 2024 19.387