Year	% of GDP
1970	17.68272697476237
1971	17.16668124435115
1972	17.310820027631557
1973	17.70288159596084
1974	18.309072410376448
1975	17.807493788151227
1976	16.596556172527904
1977	16.017703920929726
1978	14.817927974840808
1979	15.690887399792617
1980	13.45234841129952
1981	12.377915307126047
1982	11.895875842453473
1983	11.580382380347686
1984	11.741884277156723
1985	11.372114608411776
1986	11.650215152806611
1987	11.73209172213699
1988	11.975442865661574
1989	11.15354004030278
1990	10.312177856962824
1991	9.956118756542
1992	9.987295426230455
1993	10.19708885072615
1994	10.361864469117585
1995	10.796895148981765
1996	10.063887161126871
1997	10.02856291727268
1998	10.53843701420404
1999	10.119284969241107
2000	8.974695387812332
2001	9.028293721612451
2002	9.006070409073327
2003	8.974844451833174
2004	8.637325284670014
2005	8.231394811413109
2006	8.353518024191066
2007	8.35167237669765
2008	7.815081984718559
2009	7.47243936989284
2010	7.277637446931334
2011	6.831240219948619
2012	6.706956094401696
2013	6.709369696165626
2014	6.887110282322341
2015	6.96157381213814
2016	6.669694018199411
2017	6.477680649681938
2018	6.103985901619452
2019	6.27606210506328
2020	6.587926016336494
2021	5.615283870163515
2022	4.935329763024707
2023	6.0667947188328135