Year	% of GDP
1966	22.67536051748675
1967	22.85432911401026
1968	21.87002535371701
1969	21.40095279918325
1970	21.858812607697004
1971	21.51434660969386
1972	22.28798996287161
1973	23.878596197610747
1974	30.514948787546984
1975	30.35538369595044
1976	29.681263091126475
1977	29.304811144886507
1978	28.479159411025385
1979	26.377660976070434
1995	34.95966624525559
1996	33.430896897150205
1997	33.79806822316848
1998	33.24275730292329
1999	33.279662887808115
2000	30.878717294073745
2001	29.851313411587565
2002	34.14251398255928
2003	32.02979096363332
2004	31.42050528084363
2005	30.762733934128732
2006	30.18227172360589
2007	28.06701329102091
2008	27.052572048878933
2009	30.46514813149232
2010	29.078096348359683
2011	29.05020576064524
2012	28.000612357414244
2013	26.49303397949409
2014	25.845382929617216
2015	25.743354333765634
2016	25.13345435997234
2017	24.55013776930981
2018	23.973383300586143
2019	22.956252010065686
2020	24.692944398132656
2021	23.18822376577255
2022	21.88829649585829
2023	21.06010477020926