Year	% of GDP
1963	9.881727802536853
1964	7.488815405563121
1965	9.35276765573486
1966	8.342532723545181
1967	11.852124437399155
1968	12.119136413222721
1969	13.444078283677449
1970	13.480445706794844
1971	8.165686760643197
1972	8.71557458642102
1973	7.677367759625271
1974	7.573391630231105
1975	1.3612578217435207
1976	-1.497446647191312
1977	-0.5741153679282406
1978	3.6757725033587105
1979	8.058823529411764
1980	9.688212190272996
1981	9.730065117794895
1982	10.755657890027559
1983	8.165379762221733
1984	11.54175320676734
1985	10.678587622971827
1986	13.57562484949544
1987	15.172439627400545
1988	16.710124385085916
1989	17.998877888726334
1990	20.734661466069102
1991	22.25547155450744
1992	23.97986395202139
1993	24.42024983386804
1994	24.95206047371886
1995	25.272463123190526
1996	24.297042610706214
1997	23.374316483733313
1998	27.746716364927227
1999	28.228937950588683
2000	29.723281978807748
2001	34.52774952173436
2002	34.09842579600271
2003	33.57126934785921
2004	33.572155722159046
2005	31.9181112935694
2006	30.704526928087596
2007	30.07585789304657
2008	30.50791708182355
2009	31.292848724290767
2010	31.2616320377958
2011	31.57923582759436
2012	29.412946217587194
2013	28.68033186920449
2014	28.809184954385636
2015	31.56908551832881
2016	33.30908491451234
2017	30.87055502655988
2018	27.485065586614642
2019	26.621666869596982
2020	29.03911436824463
2021	17.616554507989544
2022	14.924731788755906
2023	12.924684251282631