Year % of GDP 1965 26.386546962584877 1966 24.66219123848868 1967 25.638188895718088 1968 25.348595176220567 1969 23.186582809224316 1970 24.83493980157469 1971 24.63157184770512 1972 29.095052701547814 1973 29.960064340784292 1974 32.417701154945135 1975 33.046725630706874 1976 35.5438334073293 1977 38.16510388201466 1978 30.266368495760815 1979 36.97151080861495 1980 34.16154725183122 1981 26.67869040622074 1982 22.777402998850523 1983 24.488517653610977 1984 21.754139093510926 1985 22.323766173628528 1986 24.668162310993196 1987 18.9923042325584 1988 15.810681928838058 1989 13.237788175710378 1990 18.496987419438078 1991 17.225773399693058 1992 16.13291555596396 1993 19.372303140118962 1994 19.922722968404756 1995 21.55450125903571 1996 21.14098789736775 1997 26.021836531219318 1998 24.386585902167532 1999 24.396401445313302 2000 26.82727022584958 2001 25.00929205681147 2002 25.513089455075544 2003 25.923420759948502 2004 25.90621048192365 2005 25.266566879847595 2006 25.93967833528855 2007 25.56703454964951 2008 26.74058717210146 2009 23.951204491404766 2010 26.946669326406447 2011 28.98177755822633 2012 28.571061177444278 2013 29.72489604819435 2014 29.55287523341921 2015 29.48617302323041 2016 28.45859050085092 2017 29.029764375866474 2018 28.934373781025602 2019 29.95590960800026 2020 24.526798278894386 2021 28.781495389272642 2022 31.66505777625503 2023 31.126200257411153