Year Percent of GDP 1995 44.758 1996 38.95 1997 38.995 1998 35.155 1999 35.377 2000 31.895 2001 31.919 2002 36.08 2003 41.215 2004 39.352 2005 40.202 2006 41.016 2007 36.744 2008 38.978 2009 42.848 2010 47.292 2011 48.308 2012 47.863 2013 50.877 2014 44.661 2015 46.561 2016 48.025 2017 44.532 2018 43.642 2019 42.753 2020 43.486 2021 44.421 2022 45.148 2023 45.791 2024 46.505