Year Percent of GDP 1980 30.029 1981 27.259 1982 25.415 1983 26.446 1984 26.188 1985 25.107 1986 25.136 1987 24.667 1988 25.517 1989 26.474 1990 27.369 1991 25.588 1992 24.958 1993 23.612 1994 23.833 1995 23.741 1996 22.735 1997 22.783 1998 23.34 1999 23.474 2000 23.923 2001 22.314 2002 19.919 2003 19.687 2004 19.121 2005 18.815 2006 19.773 2007 20.749 2008 20.86 2009 18.067 2010 19.625 2011 21.078 2012 19.307 2013 19.512 2014 19.635 2015 19.235 2016 19.66 2017 20.092 2018 21.202 2019 21.112 2020 21.54 2021 21.883 2022 22.153 2023 22.352 2024 22.469