Year	% of GDP
1960	16.507292055104685
1961	16.56051906728763
1962	15.88969007178766
1963	14.725225418564209
1964	13.782826253356287
1965	13.636170847864943
1966	11.943540288178104
1967	11.50427162565096
1968	10.046689354508393
1969	9.491100296805499
1970	8.972092615890794
1971	9.313553839456798
1972	8.853275245363442
1973	8.031027791876344
1974	14.534125660272013
1975	15.235203101970205
1976	11.508101847696969
1977	10.52413676475597
1978	10.249917815543007
1979	9.571344346186788
1980	9.283500344689372
1981	8.256010757325853
1982	7.544769030809813
1983	7.13724600853726
1984	6.702549867362764
1985	6.499383997124217
1986	6.656541525998964
1987	6.686750532404911
1988	6.605066351380286
1989	6.044096246417902
1990	6.048245164306835
1991	6.182745051418311
1992	6.458100499325135
1993	6.485413107238706
1994	6.576342695679996
1995	7.109664961928846
1996	7.094213040263058
1997	5.357544800606592
1998	4.557390491153246
1999	4.367110016738356
2000	4.198755239729874
2001	3.9547350349844237
2002	4.001607603963273
2003	4.077318024148056
2004	3.8264579140664536
2005	3.5082605730246312
2006	6.065410971358342
2007	5.818722647177017
2008	6.120257947019728
2009	6.373721673744299
2010	6.4700871699963205
2011	6.1945675972763885
2012	6.403724589053583
2013	6.556947683700537
2014	6.397785710898756
2015	6.57985696457314
2016	5.706164192993455
2017	6.011939216499679
2018	5.365118366213249
2019	4.940396170428621
2020	5.771093099245902
2021	5.376959424163508
2022	4.995079888571798