Year % of GDP 1960 57.454536741819226 1961 62.251654598482546 1962 62.29507256651555 1963 63.72239744549155 1964 69.25285967846023 1965 64.76964498644986 1966 70.87628865979381 1967 73.20096774193549 1968 73.94352310511874 1969 64.93312236061202 1970 73.50084780288864 1971 67.22269527910088 1972 58.7478877440636 1973 65.10492521251436 1974 71.07293706724639 1975 61.050316635162346 1976 51.51347706793988 1977 59.52930382356713 1978 57.30607790014409 1979 57.5655068303631 1980 66.30232808323223 1981 58.44319389240672 1982 56.40225873356876 1983 60.76526041974728 1984 58.895671643101174 1985 53.6444942027307 1986 46.80905809127563 1987 46.394434562893764 1988 42.798634631106204 1989 46.76704756194841 1990 42.942983518374525 1991 43.70932168712217 1992 43.2290760804125 1993 39.98862202191089 1994 48.418032231852656 1995 50.47589111711825 1996 47.08440502930919 1997 55.8185083614851 1998 51.049531876716145 1999 43.21234389789598 2000 45.6597819937269 2001 39.73049973723289 2002 36.10856477947818 2003 36.231226002347356 2004 33.24395491882025 2005 35.070936865622556 2006 36.395870228737756 2007 37.58089901878963 2008 34.43752180955166 2009 31.494246489679885 2010 34.430481954304234 2011 34.47561833272986 2012 33.05944859433144 2013 38.39928757213153 2014 53.09509201798247 2015 53.14514777696211 2016 50.530644021909985 2017 57.143545711711894 2018 49.660200002431836 2019 50.06580000148676 2020 49.52102000119206 2021 44.15911999510397 2022 45.233570001619995 2023 43.480570208358