Year	% of GDP
1961	23.246143527833667
1962	27.708069529181532
1963	32.75151050158243
1964	35.50639300134589
1965	34.15752884684297
1966	26.893992438033887
1967	19.366720516962843
1968	15.877336236617673
1969	15.619694397283531
1970	19.665887648229898
1971	23.604812413327835
1972	22.686493030763977
1973	22.150168170929415
1974	22.74767146486029
1975	21.472503982738107
1976	20.664703274431567
1977	24.19900660444299
1978	26.32020703644121
1979	29.74594244438331
1980	32.245733503227285
1981	32.66197329154616
1982	30.267595214407795
1983	24.67726124235437
1984	22.202968029558154
1985	20.971998504285796
1986	21.503470868107012
1987	23.59905767915495
1988	25.319904908212393
1989	25.878097055677113
1990	26.214672861014325
1991	26.328648113833907
1992	27.162538872300622
1993	27.002932299330833
1994	29.353474147540513
1995	30.210651238688623
1996	31.01009389614353
1997	33.30344924523864
1998	30.200355637372194
1999	25.80473830160831
2000	26.50584934142105
2001	25.798513710108377
2002	22.744675455412263
2003	21.654628227480746
2004	21.820131227557027
2005	21.39697264760556
2006	22.42676527304668
2007	20.618189484090927
2008	20.54457808463549
2009	20.464247293196607
2010	21.778136069158244
2011	23.536338869847963
2012	25.3999025065057
2013	24.10862809561779
2014	23.49180643405656
2015	22.39959470954184
2016	21.489457551961415
2017	21.65643772717138
2018	21.599518097614155
2019	18.297749542885786
2020	17.030278500616454
2021	16.843045593525463
2022	16.07023601865366
2023	16.655010751077782