Year % of GDP 1960 10.82237019697976 1961 11.08748392155931 1962 10.9816911492492 1963 11.518691026381713 1964 11.236415151789297 1965 11.455846032251962 1966 11.802569593342337 1967 11.258280784374685 1968 11.509067209444574 1969 11.794172781204006 1970 11.987834669231797 1971 13.017158776636656 1972 13.213176877586985 1973 12.696684359497262 1974 12.848617207138721 1975 13.755334600016317 1976 14.211520674704262 1977 14.062651209635964 1978 14.47366901887494 1979 14.189710181590003 1980 13.819618441360218 1981 13.46159603158691 1982 14.021931566803806 1983 14.245399365281768 1984 14.232945097031497 1985 14.403701122847298 1986 15.084728582704305 1987 14.597031744672027 1988 14.207318409363065 1989 14.664249971234893 1990 14.326375253715604 1991 13.405171955577162 1992 13.022022968692278 1993 14.018456017642256 1994 13.722153090255409 1995 13.993125113817165 1996 13.617301993380512 1997 13.962620291339467 1998 14.049019500557968 1999 14.214671537076596 2000 13.957085057601471 2001 14.196476109182585 2002 14.121983501837676 2003 13.987722500071573 2004 13.650648932900738 2005 13.678691524720854 2006 13.725970364803059 2007 13.77698189959767 2008 14.009658301507818 2009 14.930648634025644 2010 14.466928836900758 2011 14.723112834035923 2012 14.909373228735554 2013 15.08276407747192 2014 15.014981736845149 2015 15.170434911635708 2016 15.27981039522606 2017 15.26238038727111 2018 15.233039086835293 2019 15.378239968981308 2020 16.026646599698406 2021 14.873413987103937 2022 14.781350783913267