Year % of GDP 1960 33.895880067206804 1961 33.22279284598454 1962 33.51280216809071 1963 17.78306466802883 1964 39.06518223793356 1965 39.81981981981982 1966 39.900635745138366 1967 38.0239371257485 1968 36.0768350955185 1969 35.791926179336656 1970 33.85475221122856 1971 40.62798287345385 1972 35.668193548387094 1973 40.53389819987585 1974 28.436911487758948 1975 31.31487673010381 1976 32.638019746905854 1977 36.27933932193567 1978 35.66394658753709 1979 30.794291033198885 1980 32.81353572218536 1981 35.474035254883276 1982 33.24080999242997 1983 36.66331501973226 1984 34.1986891145097 1985 26.72109296901033 1986 43.254432849749726 1987 40.15918080697598 1988 53.97425799827814 1989 49.58442530887308 1990 49.6791311859805 1991 47.76410722732763 1992 48.428789536973234 1993 46.26740874291239 1994 38.29495057463061 1995 39.60488041370394 1996 37.541197473221644 1997 39.13029494065807 1998 49.837429111531186 1999 43.89063044235458 2000 37.531178981209464 2001 37.9417335230936 2002 38.8653039103033 2003 38.816350461147024 2004 36.284914919517405 2005 29.565097435915703 2006 30.921310404674202 2007 31.348439733835615 2008 28.983118645805465 2009 36.81821269571509 2010 30.82763449450176 2011 25.63256834249112 2012 27.455688781527325 2013 29.60578336291314 2014 32.67899653374985 2015 39.02919298041907 2016 41.742812479439536 2017 42.64969125520849 2018 41.11819697055712 2019 40.47037824899615 2020 44.89719671008497 2021 38.653637907564224 2022 33.192597908565816 2023 36.411487450079065