Year Percent of GDP 1995 41.29 1996 36.895 1997 40.818 1998 37.086 1999 25.849 2000 35.465 2001 36.676 2002 37.882 2003 38.881 2004 41.618 2005 44.194 2006 44.587 2007 43.658 2008 47.113 2009 48.623 2010 49.15 2011 45.7 2012 48.972 2013 48.11 2014 44.774 2015 43.043 2016 40.555 2017 41.482 2018 43.838 2019 42.915 2020 41.891 2021 41.531 2022 41.251 2023 41.019 2024 40.252