Year % of GDP 1969 38.862900713748786 1970 41.754931903119676 1971 30.99379660864996 1972 32.80692505100078 1973 39.00981576018015 1974 29.175547743549476 1975 29.3066729216303 1976 29.33757549092891 1977 28.66155723540288 1978 28.35984839361565 1979 28.083762027920763 1980 27.411969894989358 1981 29.69021945983144 1982 31.268790079550133 1983 32.133317026287756 1984 30.13141196745532 1985 30.162191926379197 1986 30.85961711962233 1987 31.776762280299533 1988 33.76099520122686 1989 33.94814776676088 1990 35.02635640346455 1991 36.39455615993719 1992 37.51890494037783 1993 38.93134206402111 1994 39.286431635206824 1995 41.71601649617027 1996 43.95776807338065 1997 41.12447890275681 1998 42.28394088809252 1999 42.79032177558913 2000 44.341955495830454 2001 47.80098546296776 2002 47.436387468917005 2003 47.20648335823816 2004 48.74284166903232 2005 50.92382551389462 2006 50.62243154023387 2007 52.711011556576906 2008 54.832119029531015 2009 57.6349282964339 2010 52.40476285144121 2011 52.45994444921756 2012 56.17179882617133 2013 56.25498896544069 2014 54.415101200832325 2015 53.094416490771955 2016 52.562690245922994 2017 49.699986801500955 2018 47.84322430686648 2019 46.18007673765029 2020 54.84359334580645 2021 46.673752665249815 2022 37.12169122006861 2023 34.48729388359854