Year Percent of GDP 1980 24.472 1981 27.333 1982 33.282 1983 30.502 1984 29.472 1985 28.752 1986 25.733 1987 27.01 1988 28.751 1989 29.598 1990 33.493 1991 31.518 1992 26.74 1993 29.182 1994 30.129 1995 31.531 1996 28.308 1997 25.414 1998 23.135 1999 23.746 2000 26.599 2001 18.539 2002 15.703 2003 19.068 2004 19.104 2005 21.345 2006 21.279 2007 20.97 2008 21.686 2009 20.765 2010 23.611 2011 19.372 2012 17.991 2013 19.135 2014 17.759 2015 25.469 2016 24.416 2017 19.28 2018 19.05 2019 19.586 2020 20.026 2021 19.977 2022 19.887 2023 19.759 2024 19.648