Year Percent of GDP 1980 40.951 1981 41.832 1982 46.4 1983 46.97 1984 46.76 1985 47.47 1986 46.808 1987 45.428 1988 44.762 1989 45.254 1990 48.091 1991 51.438 1992 52.508 1993 51.478 1994 49.013 1995 47.736 1996 45.865 1997 43.465 1998 43.407 1999 41.774 2000 40.558 2001 41.103 2002 40.394 2003 40.276 2004 39.135 2005 38.521 2006 38.662 2007 38.519 2008 38.775 2009 43.421 2010 43.064 2011 41.575 2012 40.926 2013 39.961 2014 38.371 2015 40.018 2016 40.55 2017 40.251 2018 40.558 2019 40.737 2020 40.689 2021 40.699 2022 40.749 2023 40.664 2024 40.666