Year % of GDP 1969 5.626855952184997 1970 5.16784600813039 1971 4.802123115274185 1972 4.747133435072118 1973 4.676096782156713 1974 4.040594864671256 1975 4.326493513444968 1976 4.320509801178161 1977 3.6592323665752007 1978 3.53212541203515 1979 3.4978807489141444 1980 3.445031118916861 1981 3.866973333978875 1982 3.9743368997757447 1983 3.802038234087335 1984 3.7782854975682816 1985 3.79938879844998 1986 3.9230246768921644 1987 3.8766934558723514 1988 3.8296455667120255 1989 4.144414021494319 1990 4.012240476038569 1991 3.900485208493445 1992 3.638320995928069 1993 3.185939402249304 1994 3.212751886329696 1995 3.104261304153884 1996 2.8773304316285815 1997 2.967922697983449 1998 2.5569687670399066 1999 2.329667500280123 2000 2.2986369680115573 2001 2.2246156208690526 2002 2.077675366217222 2003 2.0598272264581423 2004 1.8662877914775753 2005 1.8579262747262122 2006 1.945954638300493 2007 1.817110002099585 2008 1.6350483159713103 2009 1.5531926471011872 2010 1.7785092625475798 2011 1.578974074318953 2012 1.6595044764964793 2013 1.7908648932642706 2014 1.7383405801417597 2015 1.7243278338801868 2016 1.7665320320694808 2017 1.8555949635979876 2018 1.6506737193260352 2019 1.6358056958016371 2020 1.5990609267698643 2021 1.5169075577742375 2022 1.5049830525095742 2023 1.5165082981492835