Year Percent of GDP 1980 18.532 1981 16.372 1982 18.54 1983 20.148 1984 20.135 1985 23.538 1986 24.637 1987 25.171 1988 24.231 1989 21.897 1990 25.767 1991 23.728 1992 23.687 1993 23.253 1994 20.835 1995 19.212 1996 21.985 1997 22.962 1998 22.677 1999 21.254 2000 20.634 2001 27.015 2002 25.787 2003 26.68 2004 27.253 2005 27.332 2006 26.594 2007 31.394 2008 31.944 2009 29.687 2010 29.7 2011 28.22 2012 25.5 2013 27 2014 26.5 2015 28.805 2016 28.37 2017 28.859 2018 28.794 2019 29.702 2020 30.456 2021 31.065 2022 31.485 2023 32.055 2024 32.677