Year	% of GDP
1970	12.681728598836257
1971	12.757195256749107
1972	13.013683617536664
1973	14.537606581080217
1974	17.92702903495023
1975	16.94815168890106
1976	17.603096937266397
1977	17.912433025214945
1978	17.57315955527406
1979	19.12635895645305
1980	20.584968848775
1981	19.924618339053133
1982	19.219558430905856
1983	18.352573724336978
1984	18.650174024951223
1985	18.075728986624153
1986	17.042129122059034
1987	17.559034425936225
1988	18.10787589446269
1989	18.9255489612611
1990	19.206195942668305
1991	18.745012692391224
1992	19.464452167620905
1993	18.535838116344447
1994	19.048220506259312
1995	20.26831448486871
1996	20.771069642237304
1997	21.52913845942707
1998	21.43216955596968
1999	21.68540879231167
2000	23.495924342827475
2001	23.004944752555474
2002	23.025192063756887
2003	23.800248956059512
2004	25.595384264315296
2005	26.8073849646841
2006	28.29499113498536
2007	29.10104433021224
2008	30.389425845913582
2009	25.77855039887148
2010	27.87609608822028
2011	29.6554932061477
2012	29.39544789754725
2013	29.327434913187243
2014	29.18711989364168
2015	27.56163009871952
2016	26.614361028831436
2017	27.550837885344855
2018	28.483253273910876
2019	27.708221351975965
2020	25.573903308297275
2021	27.88767570465743
2022	30.38224270061428
2023	28.668179591935417