Year Percent of GDP 1992 27.079 1993 28.69 1994 38.4 1995 39.7 1996 41.097 1997 40.28 1998 43.485 1999 41.222 2000 39.105 2001 37.497 2002 44.331 2003 42.411 2004 41.915 2005 41.656 2006 41.911 2007 42.5 2008 41.946 2009 41.522 2010 41.136 2011 40.875 2012 41.742 2013 42.737 2014 42.649 2015 44.43 2016 46.102 2017 46.737 2018 47.608 2019 46.865 2020 46.649 2021 46.699 2022 46.543 2023 46.483 2024 46.232