Year	% of GDP
1960	23.60046332373286
1961	20.49180087255467
1962	19.80472225470179
1963	20.95408198122395
1964	21.109707875781698
1965	19.135800589341443
1966	19.18819188191882
1967	19.863017099831694
1968	19.614147909967848
1969	17.70683176013455
1970	17.894736842105264
1971	17.136409085769195
1972	16.425120772946862
1973	15.728476821192054
1974	15.117104329311568
1975	14.476885644768856
1976	13.477537437603992
1977	15.425531914893616
1978	16.036308623298034
1979	14.313725490196077
1980	11.681467813540511
1981	7.882591840502124
1982	7.859154929577465
1983	7.5825825825825826
1984	6.917047470005215
1985	7.447436135146271
1986	12.089703121035269
1987	11.937285884238507
1988	13.867069802731411
1989	12.934540295446597
1990	12.860892388451445
1991	11.317809288409002
1992	11.527563111798042
1993	11.248519931587948
1994	10.313937863919541
1995	10.452565801931453
1996	8.986689235977535
1997	9.139190086302278
1998	10.955569080949482
1999	8.355757952114814
2000	5.3042529989094875
2001	5.799931650637113
2002	6.261580122571144
2003	6.2752239393641105
2004	5.509406303444906
2005	6.104237866518513
2006	4.813146418494449
2007	4.919811080624726
2008	4.2481509716336365
2009	5.279933275075861
2010	4.0385345212259125
2011	3.9839361915251863
2012	3.7987749229843417
2013	4.260083077650377
2014	4.557656762588415
2015	5.810583781261851
2016	6.763657063524113
2017	7.309943111655308
2018	6.788394311229327
2019	7.346986943741958
2020	10.690430894238816
2021	9.096748689380025
2022	8.041910694336302
2023	8.952115876306008