Year Percent of GDP 1980 31.155 1981 32.327 1982 35.966 1983 37.048 1984 37.867 1985 41.056 1986 40.832 1987 39.754 1988 39.938 1989 41.382 1990 42.383 1991 43.963 1992 45.256 1993 47.743 1994 46.254 1995 45.533 1996 44.268 1997 42.772 1998 42.137 1999 40.924 2000 39.168 2001 38.458 2002 38.622 2003 38.275 2004 38.681 2005 38.315 2006 38.284 2007 39.028 2008 41.156 2009 45.781 2010 45.627 2011 45.83 2012 48.102 2013 45.562 2014 44.846 2015 43.725 2016 42.204 2017 40.994 2018 41.416 2019 41.147 2020 41.084 2021 40.987 2022 41.11 2023 41.19 2024 41.244