Year	% of GDP
1968	11.873015873015873
1969	11.929223744292237
1970	13.231552162849871
1971	12.577319587628866
1972	15.634728467658249
1973	15.686813186813186
1974	14.784187172246874
1975	16.118523115110143
1976	17.978620019436345
1977	19.218025182239895
1978	17.023832100638472
1979	15.575393254382492
1980	15.900661491989446
1981	15.130996076446019
1982	15.116944015554413
1983	14.754275194523148
1984	14.395533956748844
1985	15.262925446282285
1986	17.1366874643936
1987	24.746560245389908
1988	26.10782011151136
1989	22.803057663536478
1990	22.869804676230256
1991	23.689572522178025
1992	22.996411089404482
1993	25.524743813548344
1994	24.45917646519617
1995	23.835561530583085
1996	25.09054799767199
1997	26.419763692204164
1998	23.451975467001603
1999	19.88029190374502
2000	22.211351975090004
2001	17.950310051971012
2002	19.47469576339451
2003	20.678140098053422
2004	25.17814185711001
2005	26.410357873659585
2006	28.47085481167115
2007	27.887644016082774
2008	26.651527552911052
2009	22.2294039423981
2010	24.635458774688743
2011	27.74404766951243
2012	27.058414250865088
2013	28.346482018761108
2014	28.74573163869426
2015	29.554566394442634
2016	29.108233352000703
2017	29.857144984401664
2018	29.766949967111263
2019	25.977620597015616
2020	27.522228915209222
2021	28.172457546999492
2022	29.162923967823662
2023	32.371640066034225