Year Percent of GDP 1980 25.205 1981 23.85 1982 22.015 1983 17.806 1984 20.293 1985 23.565 1986 23.322 1987 24.545 1988 29.089 1989 31.822 1990 31.713 1991 30.145 1992 29.599 1993 29.549 1994 30.807 1995 28.366 1996 26.373 1997 29.22 1998 28.684 1999 29.287 2000 28.584 2001 19.854 2002 21.119 2003 22.678 2004 23.361 2005 21.709 2006 25.573 2007 25.985 2008 25.346 2009 23.766 2010 27.105 2011 23.946 2012 24.381 2013 22.032 2014 19.676 2015 18.091 2016 17.901 2017 18.265 2018 18.368 2019 21.104 2020 21.968 2021 21.221 2022 20.252 2023 20.422 2024 20.931