Year Percent of GDP 1980 28.532 1981 27.584 1982 26.973 1983 26.315 1984 27.281 1985 25.61 1986 25.118 1987 24.916 1988 26.614 1989 27.135 1990 25.19 1991 18.823 1992 16.532 1993 17.312 1994 20.812 1995 24.393 1996 23.984 1997 26.779 1998 27.991 1999 27.499 2000 31.389 2001 31.216 2002 30.229 2003 26.843 2004 28.822 2005 27.809 2006 27.666 2007 29.161 2008 27.154 2009 22.828 2010 22.693 2011 21.735 2012 20.216 2013 19.135 2014 19.089 2015 20.165 2016 21.272 2017 22.094 2018 22.527 2019 23.229 2020 23.558 2021 23.824 2022 23.974 2023 24.139 2024 24.357