Year	% of GDP
1960	20.61349693251534
1961	22.282485875706215
1962	24.605263157894736
1963	24.30188679245283
1964	24.1792828685259
1965	23.923076923076923
1966	24.934210526315788
1967	27.138554216867472
1968	28.059945504087192
1969	30.49507389162562
1970	32.93018018018018
1971	34.14489795918367
1972	33.683185840707964
1973	31.49927641099855
1974	28.7
1975	29.12818181818182
1976	32.247264770240704
1977	17.46349378042185
1978	19.328198545143348
1979	19.895697522816167
1980	18.286638609350728
1981	18.450584631252145
1982	14.406514280001073
1983	11.9809841466706
1984	13.457710043691792
1985	12.2986210470242
1986	12.5367859609475
1987	12.288738406704821
1988	11.207757354247935
1989	15.669447098535988
1990	17.549765836387884
1991	21.012491901149318
1992	28.071871837186613
1993	24.126669975057403
1994	29.44587840869422
1995	22.029695203529414
1996	14.455956327080276
1997	19.34830526619766
1998	17.020348055217024
1999	14.632751335270507
2000	13.444224183061351
2001	11.03770031157516
2002	12.560417419538425
2003	12.781242973562462
2004	12.213088166377478
2005	13.30828039261521
2006	15.644482809192912
2007	17.03451915429664
2008	16.1609169338617
2009	17.214520301932463
2010	17.542876891385717
2011	18.643469053726662
2012	19.05670294587798
2013	21.310524304366048
2014	21.13265864585244
2015	23.049490107016744
2016	25.122597771255723
2017	26.1603576778415
2018	26.075993305615558
2019	27.744645678576056
2020	27.676955889742604
2021	26.1885670468303
2022	26.059120002353037
2023	25.410782274498096