Year % of GDP 1960 15.7410331685198 1961 16.3011845028326 1962 14.9409562211982 1963 12.9888823972701 1964 16.2770871622426 1965 18.3035714285714 1966 17.2581056931325 1967 17.5847967284099 1968 19.2094774136404 1969 24.7103858164602 1970 23.8766464955276 1971 25.4132875857767 1972 28.9139045236606 1973 31.5735798592941 1974 30.8543442015561 1975 28.9270507970716 1976 27.5181363120507 1977 22.2172095663003 1978 20.6362438958569 1979 20.9950697478795 1980 21.8965033206931 1981 25.5619476530555 1982 31.5127224177968 1983 33.748712552927 1984 29.1155746992696 1985 25.3734005337056 1986 24.2076681931732 1987 28.0697206042839 1988 31.755044481275 1989 35.6193220485401 1990 31.5584641107562 1991 28.8834407116503 1992 23.1853587868682 1993 20.8580038608332 1994 19.5796982311824 1995 21.3340353366674 1996 19.9013557629947 1997 18.4648845490402 1998 23.3673847657953 1999 23.8585266670894 2000 25.5643601342327 2001 12.9520593583229 2002 14.7238341957901 2003 18.3521623110687 2004 20.0058261236853 2005 20.9780756444602 2006 23.4390781501805 2007 27.3066857340295 2008 30.1913240242059 2009 28.6034758668077 2010 26.40566482272 2011 26.795738299769 2012 28.9883287447322 2013 29.7697687864501 2014 29.3229510546383 2015 30.0294657936454 2016 32.0180541461406 2017 40.7630731597468 2018 43.1404044193978 2019 48.2994382103668 2020 56.8622941214681 2021 54.4807711147818 2022 50.8255647840626 2023 49.1925394418764