Year % of GDP 1960 26.075859040317496 1961 25.057174908673595 1962 26.049704882984386 1963 27.128250146495485 1964 28.568258015824178 1965 33.188238096564184 1966 30.773716573720577 1967 31.219922069532746 1968 32.45557634454086 1969 31.952327339799353 1970 34.578895994448494 1971 37.10522784525268 1972 36.60507802039972 1973 36.873179201043264 1974 48.12079608436024 1975 38.54777881382346 1976 34.91071601307822 1977 36.33477340774787 1978 36.03145065777277 1979 37.193358210175255 1980 36.8190209161774 1981 48.17618038922695 1982 42.164871678665115 1983 36.78286960421919 1984 33.97153196504038 1985 32.47613427256899 1986 30.49521999616351 1987 35.766486465209354 1988 35.81117323930614 1989 38.73180457781408 1990 41.09489585785847 1991 38.03356927182344 1992 40.814483245150946 1993 43.31511294336349 1994 42.11264932772018 1995 41.64516004663172 1996 44.04517098655339 1997 46.00412978358236 1998 48.07518019125151 1999 44.98074802136246 2000 43.59460135175362 2001 40.34418621507967 2002 41.18940912894233 2003 42.65599461713107 2004 43.04882373362462 2005 45.75814153162409 2006 46.500519504199026 2007 45.87445833584383 2008 47.59505205888161 2009 35.1270126988261 2010 34.68267833685428 2011 36.16667562952096 2012 35.397221959848416 2013 33.474761227217684 2014 33.828326769035236 2015 30.757904074416842 2016 30.918381876445057 2017 32.30927059697484 2018 33.20683124020473 2019 31.435208458678797 2020 28.233388592170666 2021 34.6052852757431 2022 39.092640355884036 2023 32.997950910809514