Year	% of GDP
1960	7.100410731772648
1961	8.121235141433408
1962	9.283574914370586
1963	9.311149974489918
1964	9.266660529850357
1965	9.484851017636183
1966	12.452714365373211
1967	8.42953560931158
1968	7.977598559189662
1969	9.3576559667712
1970	10.772383037558212
1971	12.367839765661492
1972	14.21370631996848
1973	15.514769459451161
1974	12.270563048803085
1975	19.246529376492756
1976	22.263653975686776
1977	19.64259194303172
1978	22.530647872260136
1979	28.541148540586942
1980	24.58422250371728
1981	24.155824162405548
1982	20.97057210168107
1983	20.82492061141418
1984	22.9053264293439
1985	20.68595238044117
1986	20.000424634495424
1987	20.80292186545248
1988	18.299882123371052
1989	16.599714998100595
1990	15.068634965716502
1991	12.017960053767965
1992	11.781664338597892
1993	10.909263387563438
1994	13.141031896276925
1995	14.53805246287331
1996	15.295924461761611
1997	13.537888178313857
1998	13.9700549614385
1999	12.655655587723489
2000	14.339703701563522
2001	13.455813515196832
2002	11.918808047899427
2003	13.27422809735289
2004	14.25856960956115
2005	14.411416011146013
2006	13.870442623181727
2007	13.066538547622883
2008	13.180509596802192
2009	14.977850620896971
2010	16.184414598201933
2011	15.289555437140697
2012	16.10057707195349
2013	16.979033602088524
2014	15.945862927874968
2015	14.268369961936807
2016	12.18333889391577
2017	12.806541214211626
2018	11.295737155056862
2019	10.759376916053167
2020	9.737845606189774
2021	9.99372066917064
2022	8.523779891301023
2023	8.825720446971182