Year Percent of GDP 1980 30.845 1981 31.066 1982 27.297 1983 24.184 1984 23.728 1985 25.027 1986 22.137 1987 23.82 1988 23.134 1989 23.275 1990 23.502 1991 23.747 1992 23.779 1993 23.021 1994 24.923 1995 20.966 1996 21.572 1997 22.597 1998 23.693 1999 22.579 2000 22.958 2001 20.835 2002 20.706 2003 21.096 2004 22.118 2005 21.644 2006 22.823 2007 23.119 2008 24.107 2009 22.889 2010 22.793 2011 23.281 2012 23.887 2013 22.493 2014 21.902 2015 23.277 2016 23.768 2017 22.957 2018 23.007 2019 22.961 2020 22.567 2021 22.089 2022 21.608 2023 21.131 2024 20.661