Year % of GDP 1965 27.585941799422052 1966 25.094482621564712 1967 25.73187360542999 1968 27.337888813327268 1969 27.76894325072165 1970 27.715731928967926 1971 28.673114846983573 1972 28.977585828448728 1973 30.322067559703463 1974 29.217616174216555 1975 30.79341070632699 1976 29.80208692792458 1977 30.977531168070595 1978 31.313787477961974 1979 31.344588619978754 1980 32.387160404707934 1981 23.53819107893958 1982 23.89020044822975 1983 26.598207204741577 1984 27.81513062236018 1985 26.079005472431916 1986 27.08434952964099 1987 29.086374690455013 1988 30.33907109084548 1989 31.06959124415552 1990 29.608708646876572 1991 29.48441070110467 1992 30.513863745847207 1993 28.86230943491019 1994 29.129187649106154 1995 29.458839483441256 1996 27.375761902065673 1997 28.31962194051738 1998 27.100062339359916 1999 34.684647983138696 2000 32.2978354690247 2001 30.78831159127688 2002 30.77106235769339 2003 32.316984575542584 2004 32.527353601386515 2005 33.10071725795266 2006 33.3077775688144 2007 36.64068652585049 2008 36.75747172161321 2009 38.64069358938121 2010 37.921441370617565 2011 37.763856826337246 2012 37.26371911710512 2013 35.47170268483037 2014 34.52622082603274 2015 35.8778367019505 2016 37.214194947813915 2017 37.41787976505271 2018 37.09222155375597 2019 37.8715635898078 2020 41.26043889361682 2021 41.285967210240706 2022 40.404109688242485