Year Percent of GDP 1983 44.798 1984 44.443 1985 48.187 1986 47.95 1987 52.475 1988 58.56 1989 59.93 1990 57.974 1991 55.255 1992 57.154 1993 56.731 1994 56.701 1995 50.516 1996 49.418 1997 48.839 1998 44.028 1999 45.862 2000 40.669 2001 37.916 2002 40.055 2003 48.024 2004 40.333 2005 39.402 2006 41.013 2007 31.967 2008 34.871 2009 36.956 2010 35.097 2011 39.764 2012 41.491 2013 38.161 2014 37.458 2015 34.221 2016 37.895 2017 36.422 2018 37.733 2019 38.209 2020 37.174 2021 36.478 2022 36.145 2023 36.126 2024 35.873