Year Percent of GDP 1980 35.194 1981 43.752 1982 46.777 1983 44.276 1984 40.247 1985 42.866 1986 38.272 1987 37.44 1988 35.76 1989 34.412 1990 36.961 1991 35.1 1992 33.613 1993 36.346 1994 39.901 1995 35.469 1996 34.374 1997 35.383 1998 28.715 1999 31.441 2000 27.862 2001 28.986 2002 32.743 2003 28.329 2004 35.674 2005 35.399 2006 34.648 2007 49.79 2008 48.535 2009 43.789 2010 47.647 2011 47.509 2012 37.194 2013 31.63 2014 37.004 2015 38.752 2016 37.147 2017 38.164 2018 34.941 2019 37.048 2020 36.347 2021 35.721 2022 35.328 2023 35.296 2024 35.276