Year	% of GDP
1970	22.087280822598114
1971	22.494529540481402
1972	24.453760162601625
1973	24.008259971742202
1974	20.623145400593472
1975	23.10326659641728
1976	26.682898882841595
1977	26.145879946301857
1978	26.644106034968978
1979	28.628720525705447
1980	28.805115004566968
1981	27.925531914893615
1982	27.735246247513412
1983	28.408445754143123
1984	31.810458298432454
1985	29.304234284648384
1986	26.637102479595537
1987	26.122217452627705
1988	26.193022227925344
1989	26.350185953754107
1990	26.7618584733406
1991	29.161346374083486
1992	31.19167677283462
1993	30.602423884126516
1994	30.77814569536424
1995	29.39336630782659
1996	28.34887884392835
1997	28.320373992272096
1998	29.61732162582143
1999	30.95055153715038
2000	35.74545849014094
2001	35.43103984088508
2002	32.847071703863705
2003	29.839725401724543
2004	29.543410606952687
2005	28.285165432038152
2006	29.608613753168534
2007	29.273113947919626
2008	32.078709227796374
2009	28.733910770070043
2010	30.273627681443088
2011	30.39431066047036
2012	28.85872713730034
2013	28.813086079287963
2014	27.979513718639136
2015	27.95256013187312
2016	26.63981397199999
2017	27.587333691060937
2018	27.88390877053169
2019	27.35030565658129
2020	21.728578745823068
2021	22.337298732299317
2022	24.39482556585737