Year	% of GDP
1960	24.0611042226312
1961	22.84262942370386
1962	23.226417853468988
1963	25.365714261790274
1964	21.83476986058472
1965	23.65473103969996
1966	23.497226801730324
1967	24.70649225874886
1968	24.01159980666989
1969	26.473654812884007
1970	25.512415735130983
1971	23.501170960187526
1972	26.600949251551853
1973	29.424511316872614
1974	19.177864682878116
1975	22.811061067357887
1976	21.06790005721923
2004	26.966878391243
2005	20.246565816883603
2006	20.83972090592318
2007	24.504536970163997
2008	23.51811898210405
2009	35.81605996847579
2010	37.881847775046175
2011	34.095164145179254
2012	30.36182433869996
2013	32.71789335276083
2014	34.9145604974323
2015	43.418353385037804
2016	45.939704915877364
2017	41.89057782937726
2018	35.471933824320864
2019	37.45724582300512
2020	55.599284279587536
2021	46.007054782947414