Year Percent of GDP 1980 36.588 1981 31.586 1982 25.084 1983 31.214 1984 24.169 1985 22.062 1986 19.466 1987 16.112 1988 18.304 1989 25.296 1990 32.758 1991 45.437 1992 43.966 1993 30.473 1994 22.182 1995 32.606 1996 40.052 1997 37.472 1998 34.597 1999 36.669 2000 41.007 2001 42.661 2002 45.101 2003 47.649 2004 48.113 2005 47.744 2006 47.839 2007 50.539 2008 48.433 2009 44.257 2010 44.931 2011 49.052 2012 47.544 2013 47.911 2014 43.605 2015 35.241 2016 37.56 2017 39.524 2018 42.635 2019 38.599 2020 37.107 2021 37.089 2022 36.926 2023 37.006 2024 36.828