Year % of GDP 1960 25.40409126482387 1961 24.82490554765188 1962 21.12274766775322 1963 21.27540021586527 1964 23.627160587266815 1965 25.85735406687162 1966 23.779168037292756 1967 25.042099176666845 1968 21.745826810228802 1969 23.921074575841985 1970 18.32442687050159 1971 36.2566262505542 1972 30.021794883413232 1973 35.11208331972967 1974 48.203698224852076 1975 49.94791984450042 1976 51.72012554436344 1977 63.64295965460772 1978 62.30586358971514 1979 58.29888143176735 1980 66.3969045824609 1981 23.5427576678342 1982 19.784356632481614 1983 23.28752308712804 1984 28.87689317588015 1985 29.052493637614514 1986 16.76645753559582 1987 21.408214411303703 1988 23.348151306900068 1989 32.240938795259396 1990 35.574566566548654 1991 35.698186484733064 1992 38.72782199082165 1993 30.704649454436268 1994 19.935419325107727 1995 14.59269978974627 1996 12.16333990705564 1997 12.30169334639312 1998 8.729205956919062 1999 37.94736793587402 2000 42.93100593005745 2001 40.28258575023702 2002 26.84998430074958 2003 33.30566000496615 2004 38.88712433639358 2005 40.54236290827087 2006 35.75056132804382 2007 36.45356548234383 2008 40.12798817686833 2009 30.72721529947751 2010 34.94232928564741 2011 41.49911431120125 2012 35.713437582548465 2013 28.17730418202101 2014 28.10946778450219 2015 19.251696370839667 2016 17.010786803778625 2017 20.157514441389747 2018 24.554034188058164 2019 24.8226887886434 2020 16.514155925207294 2021 22.400695435257603 2022 26.11501830475853 2023 28.61954820621136