Year	% of GDP
1970	12.44867395322541
1971	12.549627530494423
1972	12.7797347109208
1973	14.082214498023196
1974	16.505702478518554
1975	15.863705781021945
1976	16.171643983374462
1977	16.30400871492683
1978	16.228234581790527
1979	17.219486920160023
1980	18.285859340805455
1981	17.963814061444772
1982	17.368509610768708
1983	16.712312097091893
1984	16.984236620404396
1985	16.586113016621603
1986	15.922918795205055
1987	16.15695389731575
1988	16.493336999285948
1989	16.96561382260637
1990	17.53171917642636
1991	17.2782771525556
1992	17.257085771210505
1993	16.637992396440218
1994	17.35498647593031
1995	18.678889470801728
1996	19.23981235082457
1997	20.156742619889858
1998	20.257914333281267
1999	19.84042011029363
2000	20.904774823412797
2001	20.49770139408892
2002	20.41091382169568
2003	20.92074773092529
2004	22.428739109831817
2005	23.302893778254287
2006	24.89525643479383
2007	26.21737412200722
2008	27.41802072424267
2009	23.767226167231907
2010	25.905774004193553
2011	27.958476833629025
2012	27.840567147117472
2013	28.228829353534767
2014	28.460570275230495
2015	27.307689904081002
2016	26.679566915526216
2017	27.823351376632115
2018	28.62638521095674
2019	28.006257163163966
2020	25.79110639148206
2021	28.219588266687605
2022	30.64101198913211
2023	29.11226451741527