Year % of GDP 1960 11.969519746733914 1961 12.671448534544474 1962 11.73082033523874 1963 12.238333307224801 1964 11.893769312418431 1965 11.71502425354629 1966 11.871435259892445 1967 11.196930253385855 1968 11.275095568983707 1969 11.642819075450687 1970 11.77045112669229 1971 12.603962586680062 1972 12.791371531939703 1973 12.540591628761884 1974 12.903660618861199 1975 13.727195682737673 1976 14.138203579450067 1977 14.009612132798058 1978 14.669387141402431 1979 14.055031686044902 1980 13.597004123929949 1981 14.086235276705029 1982 14.765829378222515 1983 14.730315229236169 1984 14.618790891856762 1985 14.713337456708809 1986 15.09752125630682 1987 14.400911764721608 1988 13.912077257827358 1989 13.733592869782282 1990 13.253672460203397 1991 12.944835795960424 1992 12.908119765038869 1993 13.389766158237403 1994 13.503794202085764 1995 14.301082281188613 1996 13.923624245502738 1997 14.093568968017825 1998 14.590338727307008 1999 14.609632440345473 2000 14.332242788213792 2001 14.52493118881106 2002 14.43981653720208 2003 14.224763786256151 2004 13.933514149927353 2005 14.000419272428053 2006 14.052971994926992 2007 14.097801717053612 2008 14.197533660864229 2009 15.157675028893694 2010 14.82300076614761 2011 15.177622051826441 2012 15.409183905065271 2013 15.572770376468878 2014 15.63017201258175 2015 16.02742728213185 2016 16.14956165659555 2017 16.04031545866941 2018 16.02181225963345 2019 16.226054578099795 2020 16.819101029148204 2021 15.51871263492059 2022 15.447685016903847