Year	% of GDP
1960	20.21071177012694
1961	20.808012821709063
1962	19.966300261931348
1963	18.44707556010732
1964	18.512720160744013
1965	15.670656889399591
1966	15.563126509485512
1967	15.42376402924264
1968	18.108756827936407
1969	17.46510665356545
1970	17.417949858257163
1971	13.839754058419473
1972	13.749887616753634
1973	13.325708599229197
1974	14.114306488423873
1975	10.562621593570109
1976	11.729083377679979
1977	15.47478059450549
1978	20.18288886179989
1979	27.005023253703005
1980	25.52052211407355
1981	18.561803025360955
1982	18.818476734064816
1983	21.735218045513555
1984	21.816505505789276
1985	26.145055448908195
1986	16.442611490561035
1987	12.665421409022374
1988	15.099490423953291
1989	11.32963641324106
1990	15.697191461943955
1991	12.202386665406115
1992	12.51350576867995
1993	12.450675104103539
1994	12.771482770164031
1995	12.599885251490484
1996	13.316519917997729
1997	14.477260256286112
1998	13.702901848867677
1999	15.39688800711178
2000	16.768373720816907
2001	16.60137952193374
2002	17.274807852987426
2003	19.014666947248905
2004	22.91223375085002
2005	26.84876111170932
2006	30.53663645352102
2007	31.522116530546494
2008	29.727630209883788
2009	26.442052739027815
2010	27.826164152174748
2011	30.502759756388876
2012	27.44961437109722
2013	24.80829942085084
2014	22.606970375815074
2015	21.287325285895804
2016	22.600313740990753
2017	24.71987197469727
2018	25.19218467224722
2019	24.03908743490677
2020	23.01144314299312
2021	29.14535850087661
2022	28.90443432921237
2023	27.08861517577306