Year Percent of GDP 1993 20.13 1994 25.804 1995 26.25 1996 24.049 1997 27.183 1998 25.515 1999 24.833 2000 24.508 2001 23.364 2002 23.11 2003 20.882 2004 21.522 2005 22.416 2006 21.807 2007 23.675 2008 22.292 2009 17.676 2010 19.303 2011 20.015 2012 21.876 2013 22.842 2014 23.13 2015 22.811 2016 20.818 2017 20.557 2018 21.697 2019 22.175 2020 22.275 2021 23.023 2022 23.931 2023 24.733 2024 24.983