Year Percent of GDP 1995 29.56 1996 26.397 1997 26.537 1998 27.714 1999 26.185 2000 29.193 2001 25.655 2002 22.449 2003 21.46 2004 25.298 2005 24.188 2006 22.899 2007 21.865 2008 22.762 2009 17.803 2010 12.387 2011 12.536 2012 9.456 2013 9.989 2014 13.026 2015 15.466 2016 17.221 2017 17.044 2018 18.203 2019 19.872 2020 19.228 2021 18.487 2022 17.654 2023 16.826 2024 15.808