Year	% of GDP
1965	15.951402272227128
1966	14.891107817869248
1967	15.797021049361417
1968	15.996277101667822
1969	15.548025547843626
1970	17.226462940921067
1971	17.944217886468284
1972	18.614233387436386
1973	19.64237668649249
1974	20.119021293310713
1975	19.896805543485033
1976	19.708519784770743
1977	18.612355228933783
1978	19.382723666843958
1979	19.696731953127436
1980	20.72817068017602
1981	20.382957290046807
1982	19.183336249711893
1983	20.322699430594817
1984	20.483865094676414
1985	18.145457669474244
1986	19.484655924994705
1987	20.667797709051
1988	19.46708291019838
1989	22.971044803746295
1990	20.48478538947654
1991	24.096141984539525
1992	26.898699220001234
1993	21.021161586055474
1994	19.054826994452647
1995	19.26422235620984
1996	16.68575983486592
1997	15.878676720411141
1998	14.416094725368989
1999	13.201355652120291
2000	13.387981711573179
2001	13.14537154722824
2002	11.871740480827505
2003	12.166739955176276
2004	13.94948537949163
2005	15.122848924919435
2006	16.013188347721158
2007	16.097423140856904
2008	16.33451644435853
2009	11.030513139568173
2010	9.20811285146248
2011	9.172401151636064
2012	14.043402156860282
2013	12.919056708337218
2014	12.59076470062383
2015	11.888599220304265
2016	11.596019891907305
2017	11.017008591340655
2018	13.678137001100424
2019	14.222359743687807
2020	15.696566446555089
2021	12.442933865955883
2022	21.486861494320934
2023	13.808226322074027