Year % of GDP 1960 48.1369836963319 1961 48.64914191744498 1962 49.291533903966354 1963 48.31526589815473 1964 48.67741078537247 1965 47.94998454635711 1966 46.00237457394007 1967 42.159359663451085 1968 42.166115234687396 1969 42.76551106536932 1970 43.82703808336473 1971 43.98160311524341 1972 44.94407052993254 1973 44.68826498003893 1974 43.54981561586577 1975 44.6109264230545 1976 45.96035065817988 1977 51.767606442954296 1978 51.64192628200559 1979 49.32800741138114 1980 46.65606676558088 1981 49.15182459019379 1982 48.784988624729614 1983 47.23604800393186 1984 48.79434986924058 1985 47.574531391850385 1986 50.86455410324848 1987 50.223153983526295 1988 47.61286805317669 1989 49.24215198477818 1990 50.48469257992658 1991 48.881421112168454 1992 49.74484281667566 1993 51.654841842129564 1994 49.42005416377459 1995 49.4230075513028 1996 46.27143434308414 1997 43.9841938742815 1998 43.68317990780384 1999 45.49412404616179 2000 44.57949472849542 2001 42.99815227420837 2002 43.932055082334976 2003 40.39867430879631 2004 28.687927146127922 2005 35.06782703343475 2006 32.52468986926892 2007 33.24858475994524 2008 32.568665438858844 2009 37.51149969775541 2010 33.41279742252578 2011 32.59309775006983 2012 31.824468996993875 2013 33.02000579579121 2014 31.091007293535306 2015 33.03970976367007 2016 30.493042638703212 2017 33.50713082505991 2018 37.52507706532179 2019 40.467352937888975 2020 43.57782534204375 2021 35.659860447087965 2022 24.521438637488444 2023 28.703471280720883