Year % of GDP 1965 23.323170731707318 1966 23.170731707317074 1967 22.47351335925516 1968 20.842105263157894 1969 24.482448244824482 1970 34.51776649746193 1971 45.980176211453745 1972 46.22344610542879 1973 42.4609029212157 1974 32.91656648232748 1975 26.613363792118793 1976 24.930448222565687 1977 25.509533201840895 1978 28.806626444421717 1979 31.472612990122716 1980 34.51579649505791 1981 35.776293823038394 1982 32.17070953542893 1983 27.231014504024575 1984 26.33065392135564 1985 22.829392489214744 1986 22.36424777408384 1987 27.528413395969086 1988 29.95678067744737 1989 31.43774492842256 1990 32.35588137287571 1991 31.271210362889313 1992 29.550520696395704 1993 26.946253114365092 1994 25.881972259633045 1995 26.977627304753625 1996 23.01348441504446 1997 26.173354139613046 1998 28.112527168543767 1999 26.67991514664017 2000 25.142477879102902 2001 25.918499090934606 2002 27.472396559739654 2003 28.015852827945675 2004 27.841773564203613 2005 25.339812530215518 2006 20.26153137335407 2007 24.56792259169342 2008 25.385750282209358 2009 28.335103525520864 2010 26.764894119175363 2011 30.19829213020286 2012 31.465831733317916 2013 27.589753516384803 2014 25.435437435883273 2015 27.10328567943326 2016 24.51917227100835 2017 24.17917645307285 2018 26.39347320475537 2019 28.849665122709123 2020 27.63074699352741 2021 26.39297831998467 2022 24.412164161740442 2023 25.657852687672012