Year	% of GDP
1960	6.079732849255268
1961	6.0012785952837415
1962	6.336418670152728
1963	6.70122238073317
1964	6.469997297331512
1965	6.441756838532058
1966	6.563938202297294
1967	6.674460039478014
1968	6.98490559835858
1969	6.410880582532642
1970	6.71438825641886
1971	6.5025414704379765
1972	6.982171311072779
1973	8.644178294039266
1974	11.98027455432368
1975	11.466085758646628
1976	11.694689849565538
1977	12.027104775504654
1978	15.914538230397323
1979	17.460925363677422
1980	20.264282512715088
1981	21.429793463886384
1982	19.679998170858415
1983	19.748365778880252
1984	18.3539027296103
1985	18.442008118687365
1986	17.090743702096823
1987	19.15490828478603
1988	22.17380038667447
1989	22.45471160618837
1990	23.077457899853524
1991	24.853343464381844
1992	26.067232520195716
1993	29.086764767421723
1994	28.87425275488286
1995	29.48023269945174
1996	28.192070182165104
1997	27.527781830786175
1998	24.891982747538222
1999	25.174252891911753
2000	29.06471911675293
2001	27.773905888049345
2002	28.54528667001281
2003	31.44650624416081
2004	35.27050874322594
2005	35.44828493821213
2006	34.47369742732005
2007	32.48072808333344
2008	31.001951245132727
2009	24.910083072824065
2010	27.67654590526857
2011	28.36077999228236
2012	27.07968664732302
2013	26.26221745045228
2014	25.28543870800683
2015	21.958804085673247
2016	21.08239262730224
2017	21.948911903770593
2018	22.64739489965631
2019	21.418360953285966
2020	19.550179690843006
2021	21.216317054815566
2022	22.126044403760197
2023	21.779856803988885