Year Percent of GDP 1994 35.446 1995 35.496 1996 30.644 1997 27.773 1998 30.083 1999 25.399 2000 24.302 2001 24.59 2002 28.588 2003 24.54 2004 28.752 2005 27.544 2006 28.277 2007 28.562 2008 28.7 2009 27.614 2010 28.635 2011 25.632 2012 24.402 2013 24.535 2014 22.875 2015 26.892 2016 26.605 2017 28.485 2018 28.245 2019 31.188 2020 28.445 2021 27.928 2022 28.281 2023 28.436 2024 28.596