Year	% of GDP
1960	26.69311376772816
1961	20.31201811952882
1962	17.65652590813225
1963	19.954452634476556
1964	21.256422172248993
1965	22.701411072442426
1966	23.576896089709916
1967	21.40623359366667
1968	21.76697678229833
1969	21.950439241843117
1970	25.86859731059224
1971	26.063350774784293
1972	25.581747616325597
1973	26.045277332083426
1974	26.935092426073137
1975	28.722560584525368
1976	28.58753325823256
1977	29.734641721327186
1978	29.018731732990545
1979	26.6942835070266
1980	27.546994971581846
1981	28.370662222138037
1982	26.329296679370763
1983	25.095945142708047
1984	25.08612105610864
1985	25.552011671205026
1986	24.92098531439484
1987	24.43440394833581
1988	25.97471025378672
1989	27.093749468728323
1990	27.198546357906583
1991	26.65191230497609
1992	27.08025192866873
1993	26.583735330743718
1994	26.716066426634093
1995	26.036239192614
1996	25.489116803982103
1997	25.155835151338362
1998	24.342882377296167
1999	24.21885370398196
2000	24.16574065676393
2001	25.063352731055673
2002	25.37312938606914
2003	26.780252319230403
2004	28.29478851177675
2005	27.88678217895913
2006	28.532349449570006
2007	30.063926321491603
2008	31.16524284888601
2009	31.235707008117565
2010	32.41164952506592
2011	32.96724580234643
2012	33.0766728443132
2013	33.07086169632282
2014	33.14411644135477
2015	32.88087217982825
2016	32.33385882322577
2017	32.598171736780316
2018	33.54342147649908
2019	32.96374550651899
2020	33.35302751006014
2021	34.306016592731545
2022	33.95040031897209