Year	% of GDP
1970	6.295002700887868
1971	6.483960037033221
1972	7.013364473972583
1973	7.684841303509425
1974	9.746811649003776
1975	8.845602105249043
1976	9.51728715280024
1977	10.08994770460239
1978	10.333942420063218
1979	11.005083798310753
1980	11.649653266296394
1981	11.294141710419252
1982	10.133141338863998
1983	10.142087395337267
1984	11.214553952088513
1985	10.839611717033474
1986	11.12953266566038
1987	11.659375269888885
1988	11.889281878827305
1989	11.808593574222888
1990	11.868896996863839
1991	11.462947782362095
1992	11.606800162750028
1993	11.94997334117584
1994	12.673559890755245
1995	13.372402549347893
1996	13.481152737248891
1997	14.006963370336736
1998	13.996784027430618
1999	14.669037149458305
2000	16.04936998330755
2001	14.7709864686121
2002	14.621694482430044
2003	15.000012414238803
2004	16.221579803049156
2005	17.083485124666776
2006	17.758589419439712
2007	17.97893394204583
2008	18.889069845225684
2009	15.228008906477536
2010	17.352475462857566
2011	18.780108606346673
2012	18.576846068634772
2013	17.919629375769173
2014	17.91169754363831
2015	16.771974255467374
2016	16.0170735988273
2017	16.400845216452655
2018	16.63489240587107
2019	15.935418562821873
2020	14.368152901770184
2021	15.762083690017537
2022	16.82647657167208