Year Percent of GDP 1980 34.456 1981 32.445 1982 32.209 1983 32.782 1984 32.248 1985 32.566 1986 32.422 1987 33.09 1988 34.704 1989 37.096 1990 39.616 1991 41.374 1992 38.485 1993 37.48 1994 38.539 1995 39.003 1996 39.681 1997 37.425 1998 27.762 1999 30.916 2000 32.942 2001 31.56 2002 30.94 2003 32.015 2004 32.117 2005 32.163 2006 32.701 2007 32.58 2008 33.019 2009 28.466 2010 32.023 2011 32.959 2012 31.001 2013 29.102 2014 29.277 2015 28.918 2016 29.252 2017 31.076 2018 30.183 2019 29.602 2020 29.268 2021 29.027 2022 28.787 2023 28.518 2024 28.259