Year	% of GDP
1960	8.486457131314506
1961	7.966386929693487
1962	7.9292360306564085
1963	7.906202428008379
1964	7.765856403698361
1965	7.632212953858995
1966	8.87948643203404
1967	8.320756192291464
1968	7.1670559009771955
1969	6.408628985688251
1970	6.506731005905034
1971	6.378213836939367
1972	5.831845735622118
1973	6.717937451623015
1974	8.311788017735774
1975	9.132051850970313
1976	9.273520345853514
1977	8.792733560144507
1978	9.342616816257701
1979	11.186636251595093
1980	12.51772839898885
1981	11.66113160253969
1982	11.33133188198428
1983	10.887344243328947
1984	10.758102238245426
1985	10.626179840900079
1986	9.661294363220488
1987	9.398821601584283
1988	9.997815169022699
1989	10.756480478044883
1990	10.966857695314456
1991	11.294056732715946
1992	12.475032366366202
1993	13.338510869113158
1994	13.036301249026177
1995	14.899977987073918
1996	14.613583493950182
1997	14.758232175728745
1998	14.940904791869002
1999	15.342743524854463
2000	15.286803368145554
2001	15.090283223192541
2002	16.010328241270965
2003	16.34061328916826
2004	19.589211399528175
2005	22.63379043223168
2006	24.80496821640989
2007	25.03756239861427
2008	29.068331410865795
2009	25.854173700589012
2010	26.470787959786367
2011	30.16767358436674
2012	30.26090574000188
2013	27.691588708597465
2014	25.62498981183687
2015	22.24196395137697
2016	20.621503304738958
2017	21.612005594023685
2018	23.453853232936147
2019	21.443088096739565
2020	19.033541107945023
2021	23.139221685678105
2022	26.170128904194417
2023	23.19418272034501