Year Percent of GDP 1980 28.65 1981 29.563 1982 27.407 1983 23.935 1984 27.994 1985 26.723 1986 27.086 1987 24.642 1988 24.65 1989 25.438 1990 22.693 1991 17.543 1992 18.184 1993 23.993 1994 24.624 1995 25.977 1996 20.978 1997 20.716 1998 23.072 1999 19.316 2000 16.06 2001 16.235 2002 18.632 2003 18.356 2004 17.505 2005 17.171 2006 18.233 2007 13.648 2008 13.453 2009 15.199 2010 12.561 2011 14.706 2012 10.16 2013 8.246 2014 8.004 2015 12.74 2016 11.568 2017 12.193 2018 13.414 2019 13.139 2020 14.395 2021 15.105 2022 15.586 2023 16.081 2024 16.657