Year Percent of GDP 1980 34.853 1981 34.94 1982 30.983 1983 26.669 1984 24.418 1985 21.5 1986 23.432 1987 26.068 1988 28.352 1989 26.523 1990 27.17 1991 26.921 1992 28.177 1993 27.25 1994 31.379 1995 34.291 1996 31.8 1997 34.2 1998 29.004 1999 24.98 2000 27.582 2001 25.491 2002 23.181 2003 22.38 2004 22.357 2005 21.06 2006 22.285 2007 21.396 2008 21.041 2009 21.847 2010 23.89 2011 24.143 2012 25.22 2013 24.03 2014 23.822 2015 21.541 2016 21.507 2017 22.046 2018 21.693 2019 21.313 2020 20.923 2021 20.624 2022 20.509 2023 20.337 2024 20.277