Year	% of GDP
1960	7.86776012301384
1961	10.233992767496277
1962	5.602576586023519
1963	8.196210421341311
1964	12.083829817060348
1965	6.692113032475748
1966	4.526748971193416
1967	8.00896437839113
1968	8.80431153717747
1969	11.66298749080206
1970	13.622754491017963
1971	15.795206971677562
1972	18.777388255915863
1973	17.88728640388545
1974	16.781845349271574
1975	20.341704567925646
1976	20.721291548940627
1977	20.127612344626975
1978	20.534159852281718
1979	20.93432088279928
1980	20.871501594210233
1981	21.384492938715827
1982	22.583452675214563
1983	25.745478821562713
1984	22.79311422230595
1985	23.269123571591457
1986	25.550997163221545
1987	25.17103052551377
1988	26.99155834285682
1989	28.53472835731978
1990	30.55156208780085
1991	29.671418182969283
1992	28.002593459786944
1993	26.28067311185357
1994	27.570687748433688
1995	28.42981108836888
1996	29.602360637514835
1997	28.307677062679087
1998	25.429506666729445
1999	20.138759311817537
2000	19.850854447200216
2001	19.67265820416662
2002	19.429164049797308
2003	19.5060592212863
2004	22.448616972835314
2005	23.640511770779106
2006	24.130991528612338
2007	24.946943643022294
2008	27.69859122218244
2009	31.1147665573684
2010	30.999408825566043
2011	31.307454036313327
2012	32.71962806523831
2013	31.965779567938185
2014	32.51674144027459
2015	32.81192658258141
2016	32.57773149686352
2017	32.1606388645588
2018	32.28849708964822
2019	32.346884552013165
2020	31.709756451727078
2021	30.7941950585175
2022	29.08542489027325
2023	29.329856252739305