Year % of GDP 1960 15.371367647546839 1961 14.935599555726256 1962 14.822863295986014 1963 14.705975437934812 1964 15.581813781207119 1965 17.97367443789492 1966 20.853838921464995 1967 21.892526140629972 1968 22.62640426576425 1969 22.3442447601887 1970 22.94291961778275 1971 23.56550336984849 1972 23.772684364066272 1973 25.969953971223923 1974 24.927908486777657 1975 23.90101573360252 1976 22.970832010760734 1977 22.572231201071826 1978 25.85479023827368 1979 47.98616552660994 1980 48.312402658357954 1981 52.54891954711697 1982 55.23855968542246 1983 28.008419801343216 1984 17.555830294806864 1985 16.189840683305594 1986 16.241801561360706 1987 13.14381925328776 1988 14.955585818424822 1989 11.274878263995555 1990 36.50438179382561 1991 15.490187931917959 1992 22.704149933065594 1993 28.368761337736636 1994 15.698787285534651 1995 16.547062580301084 1996 12.866244465420293 1997 16.171556535008328 1998 19.807076771045402 1999 23.14111488335144 2000 23.515346653609395 2001 13.670670529699782 2002 15.082546870274513 2003 17.63139293257443 2004 19.57872587040481 2005 22.550280902017356 2006 26.387759491721923 2007 30.12177273140861 2008 28.149170004603164 2009 25.382116030587355 2010 24.265112522245044 2011 23.948956589607175 2012 26.74217046192433 2013 29.36951598802378 2014 31.17099426684432 2015 34.144934755613775 2016 36.69377905317255 2017 39.08366861572294 2018 35.96783279088927 2019 29.8786775132725 2020 27.77728999985213 2021 25.59435135076277 2022 26.195605229710456