Year % of GDP 1960 11.277959946195029 1961 11.614237273941308 1962 11.495082567496013 1963 12.062601339301104 1964 11.586801190932674 1965 11.770489740606557 1966 11.972316737464615 1967 11.378665890435252 1968 11.571964800398323 1969 11.926151963725081 1970 12.270880722334427 1971 13.206431026242122 1972 13.323922613737032 1973 12.765350705878497 1974 13.099572526513988 1975 14.108031474515826 1976 14.595419750242607 1977 14.332657887082275 1978 14.749081830251331 1979 14.34874901098028 1980 13.893616079246657 1981 14.42016034675657 1982 14.999237314734012 1983 14.832487217110197 1984 14.608923164233609 1985 14.82514526895075 1986 15.194740220672756 1987 14.612976157858975 1988 14.202905880447322 1989 14.684460591187573 1990 14.337666344710131 1991 13.394852408099075 1992 12.869142512137852 1993 13.989834892412084 1994 13.79518360004364 1995 14.277682802388162 1996 13.965118351110528 1997 14.375137748642524 1998 14.530886493080612 1999 14.348849421308667 2000 14.12037180041368 2001 14.37136394606767 2002 14.324370282038334 2003 14.17291999485889 2004 13.808156610101216 2005 13.866812179157165 2006 13.923713407458226 2007 13.946190635346085 2008 14.206401444161306 2009 15.142501447742854 2010 14.665028079935876 2011 14.898994466419202 2012 15.101061660189853 2013 15.308608494244302 2014 15.267532379053431 2015 15.442721805426975 2016 15.519792093668125 2017 15.463062479779005 2018 15.447994013332126 2019 15.620753991753247 2020 16.28290303364823 2021 15.023500252309452 2022 14.940230529122028