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 29.704 1996 36.727 1997 36.281 1998 35.622 1999 34.291 2000 37.417 2001 40.804 2002 41.908 2003 46.299 2004 46.67 2005 41.39 2006 40.613 2007 41.581 2008 43.452 2009 42.116 2010 40.71 2011 38.606 2012 41.528 2013 41.22 2014 40.399 2015 34.911 2016 33.534 2017 35.704 2018 38.326 2019 38.971 2020 37.735 2021 37.921 2022 37.73 2023 37.598 2024 37.427