Year	% of GDP
1970	21.987222342747597
1971	25.2812237431209
1972	24.287715030106867
1973	23.0610605227822
1974	18.042854540486385
1975	19.509942431071277
1976	19.39300543405938
1977	17.38353671069249
1978	21.251415671579394
1979	18.7951946047415
1980	21.492947476222895
1981	20.91162348319665
1982	21.170421426302195
1983	20.74526466898459
1984	21.073154005078948
1985	17.28378771115232
1986	20.68862725139621
1987	23.54530810629016
1988	24.314474888929787
1989	24.00795528720627
1990	24.71269471087721
1991	26.41455862420134
1992	22.97600030270675
1993	23.148090454582963
1994	21.89742561439032
1995	20.448335342484018
1996	19.65702892171516
1997	21.339196424505786
1998	22.325580394879097
1999	23.688471331593874
2000	22.559144301013827
2001	22.211803413324073
2002	20.427862931545498
2003	21.309558247484766
2004	21.305319622594133
2005	21.510257294792183
2006	19.003875488678947
2007	19.513325349146136
2008	20.57963948065511
2009	16.18290079653542
2010	18.08319349362417
2011	19.268797706388753
2012	18.7523048822473
2013	18.145372691423674
2014	19.09358675957335
2015	18.9584857711264
2016	17.93191326198936
2017	18.889717550224187
2018	17.04468828980091
2019	18.69294439352911
2020	17.345323736881817
2021	18.83957985021184
2022	17.74576996994673
2023	17.950222988075772