Year % of GDP 1960 14.463657681386957 1961 13.95947159867481 1962 16.987962292576935 1963 19.82464168790742 1964 18.527972419696383 1965 18.63513863232483 1966 21.772548249922153 1967 21.9005801824792 1968 23.27153489156015 1969 24.32591560862864 1970 25.597693438255405 1971 24.20860487546087 1972 21.67666095343715 1973 26.995948172384644 1974 26.63502807136937 1975 26.75041342089033 1976 23.985280976874005 1977 26.88475787125847 1978 28.163866586780774 1979 27.205225210218398 1980 29.141924133175124 1981 29.675309518036663 1982 26.516542009971307 1983 29.975276320559 1984 29.473113683305364 1985 28.24458054131687 1986 25.872310911816104 1987 27.874711990577417 1988 32.59088991920238 1989 35.06611671165779 1990 41.35376258604877 1991 42.84137754794478 1992 39.9639476511796 1993 39.65614663853263 1994 40.9077848466695 1995 42.862694404940804 1996 42.5326887141045 1997 34.274729264103634 1998 20.071495524989295 1999 20.173405046446362 2000 22.28260569408776 2001 23.112437210021103 2002 22.744193769457663 2003 23.829298673816975 2004 25.68141470248115 2005 30.420750863067415 2006 27.01164339305415 2007 25.496014290403107 2008 28.22643495177517 2009 20.636398376711817 2010 25.356654634074584 2011 26.79145824684489 2012 28.024165714601086 2013 27.45710118296656 2014 23.919019547850148 2015 22.355640638324502 2016 21.105489201517415 2017 22.93429568876954 2018 25.21959015944392 2019 23.814752574637456 2020 23.75538517226964 2021 28.625514985879214 2022 27.82913353452624 2023 22.565721416290295