Year	% of GDP
1960	9.935945180992105
1961	10.23301516002246
1962	10.290135396518375
1963	10.714285714285714
1964	11.411378555798688
1965	13.250761820505257
1966	15.465042276570598
1967	17.881625146296606
1968	18.74613481756339
1969	22.35029772827113
1970	24.01106500691563
1971	25.239398084815324
1972	25.73474630976004
1973	27.791782344755195
1974	28.134364427259545
1975	31.005338078291818
1976	31.09421480319788
1977	31.07816804666571
1978	19.383373399130452
1979	19.175957346077478
1980	18.60812042458632
1981	19.651846149747737
1982	20.771106707930667
1983	21.9548019313469
1984	21.956897826706385
1985	23.003452670655456
1986	23.13208110853908
1987	24.401014729964558
1988	23.056960097963316
1989	21.819497220277526
1990	19.108929729787953
1991	17.261584564263256
1992	19.580595131328067
1993	19.007846305385034
1994	19.534014975065407
1995	18.019578862895152
1996	20.199707630346797
1997	26.228928615755404
1998	30.83977770309689
1999	34.55875442252266
2000	34.11368851435762
2001	36.27595257004603
2002	35.69854052494716
2003	36.29068599146045
2004	37.20422180319923
2005	38.25666004509718
2006	44.136162488893824
2007	51.646904032922436
2008	50.533377208819616
2009	49.535764632385835
2010	47.09890141558843
2011	46.958260080645545
2012	50.99223068259119
2013	54.43522491677737
2014	54.766983497208734
2015	54.30044210273473
2016	56.85233964364893
2017	56.85598656084932
2018	61.405793596538516
2019	63.10704387942876
2020	69.18823155481832
2021	65.72869755780967
2022	68.58208601808812
2023	74.05188572832635