Year	% of GDP
1960	9.918351219189239
1961	10.6141463057822
1962	10.314010292332876
1963	10.416498261856704
1964	10.042417534283148
1965	9.56193777150382
1966	9.35350524791626
1967	9.475987273845071
1968	9.856391769180787
1969	9.632600248322078
1970	9.508067847676761
1971	10.1337575696424
1972	10.759535093444466
1973	13.095962517662501
1974	17.5826318511083
1975	15.451198870261507
1976	16.7339275175294
1977	16.566906371591823
1978	16.87676795899048
1979	18.859393394248396
1980	19.246009679751623
1981	16.54058041022914
1982	17.27740869006291
1983	17.240736318913733
1984	16.9569585481188
1985	16.099340864122045
1986	14.194113871795253
1987	17.84442235214105
1988	19.072282633291717
1989	19.43165558527761
1990	18.83810904523707
1991	19.619703977779594
1992	19.873220225519557
1993	18.751968777283963
1994	19.71176975049704
1995	20.646282988654264
1996	20.63048353092412
1997	21.39804662035523
1998	21.031852024852217
1999	22.972416467465322
2000	25.400850817390758
2001	24.784768125623945
2002	26.90361997827336
2003	28.71573177413005
2004	31.004559203964842
2005	31.783407922982665
2006	32.65387612457824
2007	32.072690616498974
2008	31.594809804323088
2009	25.77493764583202
2010	26.97994807183702
2011	27.400706791669123
2012	26.995838831409046
2013	26.068731219465462
2014	25.206882900573202
2015	23.581477886526763
2016	22.434959082442205
2017	22.835766235942945
2018	23.514633362898596
2019	22.707230492357706
2020	21.831586199679904
2021	24.046288759734182
2022	25.562761129777055
2023	23.933601612317414