Year % 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 16.587796771960285 1996 13.432981892082326 1997 16.799486732496234 1998 20.448663606545068 1999 23.67020502516721 2000 23.989488304567207 2001 13.71783659471417 2002 15.13039661977191 2003 17.680001449054352 2004 19.63950417372588 2005 22.619563709208816 2006 26.461665534401874 2007 30.188027912458764 2008 28.209768590282557 2009 25.44532575266969 2010 24.322265873184893 2011 23.99400904373206 2012 26.782795525534997 2013 29.410910480324787 2014 31.205817887885622 2015 34.16939473398637 2016 36.71227339128679 2017 39.098563784932175 2018 35.98154503942207 2019 29.89258669342342 2020 27.789404794426776 2021 25.605052566536475 2022 26.204247855887804