Year	% of GDP
1960	9.497543339204597
1961	12.70132866236596
1962	14.21341873245562
1963	15.881096475614099
1964	19.98757854742072
1965	20.947848237029092
1966	19.523894649028723
1967	19.472809308952744
1968	22.839336449454677
1969	26.08978017436483
1970	32.12117088769071
1971	36.18234029351073
1972	37.24991869722849
1973	34.690638346992955
1974	37.5064295400346
1975	34.891140457581564
1976	34.9714064811976
1977	33.15375583983563
1978	34.63031836574433
1979	35.58785688608026
1980	39.521677954046446
1981	42.13989193463363
1982	45.81974738973315
1983	46.10489253245047
1984	46.220501121484574
1985	40.78991160664468
1986	35.12851927116576
1987	32.36281408138399
1988	30.29553285185178
1989	31.680762047676915
1990	31.722188097139686
1991	33.144731280270115
1992	35.19845690424657
1993	34.64412380735495
1994	33.35601845846578
1995	33.18616813148936
1996	37.87638867203035
1997	38.433209295567735
1998	38.01661475282436
1999	34.57356284507957
2000	32.32634436257641
2001	30.88704023231414
2002	26.751423220905973
2003	24.76629443462446
2004	24.281423420921346
2005	23.18799565632301
2006	23.08671114521246
2007	24.375682074209674
2008	27.978919594541324
2009	28.83745965307398
2010	25.569721215450116
2011	25.26491463790517
2012	26.429988298955582
2013	27.54821559366883
2014	28.12820922230697
2015	27.222270897150295
2016	25.989268756818756
2017	25.239339730353045
2018	22.405903431898935
2019	22.841996182462275
2020	20.931523144363442
2021	22.245270450420637
2022	20.71734603125822
2023	22.190722327021092