Year % of GDP 1965 27.585941799422052 1966 25.094482621564712 1967 25.731873605429985 1968 27.337888813327268 1969 27.768943250721644 1970 27.715731928967934 1971 28.67311484698357 1972 28.977585828448717 1973 30.322067559703477 1974 29.21761617421655 1975 30.793410706327 1976 29.80208692792459 1977 30.977531168070588 1978 31.31378747796198 1979 31.344588619978744 1980 32.387160404707934 1981 23.538191078939576 1982 23.890200448229734 1983 26.598207204741588 1984 27.81513062236018 1985 26.079005472431923 1986 27.084349529640985 1987 29.086374690455006 1988 30.33907109084547 1989 31.06959124415553 1990 29.60870864687657 1991 29.484410701104668 1992 30.513863745847214 1993 28.862309434910195 1994 29.129187649106154 1995 29.458839483441253 1996 27.375761902065673 1997 28.319621940517383 1998 27.100062339359912 1999 34.6846479831387 2000 32.297835469024704 2001 30.78831159127689 2002 30.771062357693385 2003 32.31698457554259 2004 32.52735360138651 2005 33.10071725795268 2006 33.307777568814416 2007 36.6406865258505 2008 36.75747172161319 2009 38.64069358938119 2010 37.92144137061758 2011 37.76385682633724 2012 37.263719117105104 2013 35.47170268483036 2014 34.52622082603274 2015 35.87783670195049 2016 37.21419494781394 2017 37.417879765052696 2018 37.09222155375598 2019 37.87156358980779 2020 41.26043889361681 2021 41.28596721024072 2022 40.40410968824248