Year Percent of GDP 1992 45.714 1993 46.513 1994 49.499 1995 50.719 1996 50.61 1997 56.174 1998 36.698 1999 31.215 2000 37.993 2001 33.772 2002 40.417 2003 45.35 2004 45.718 2005 45.806 2006 47.072 2007 46.968 2008 46.314 2009 51.436 2010 51.393 2011 47.464 2012 45.132 2013 43.382 2014 42.394 2015 41.151 2016 42.881 2017 45.279 2018 46.285 2019 46.865 2020 47.275 2021 47.475 2022 47.584 2023 47.552 2024 47.605