Year	% of GDP
1970	13.690918569922694
1971	12.88091601516019
1972	13.841656024387847
1973	14.7856018915624
1974	18.510846200335433
1975	16.710153201616006
1976	17.510630619377817
1977	15.911744180479017
1978	13.845673853488801
1979	14.131842872119762
1980	17.26981457005091
1981	19.09673718586627
1982	19.55131556210728
1983	20.693205850095385
1984	20.238370638816658
1985	20.00188503688784
1986	17.150016662100956
1987	18.595117249013533
1988	19.410694827557997
1989	20.781806020872015
1990	19.88593507797041
1991	19.71782143458352
1992	19.79029322691908
1993	19.24100637074856
1994	21.333343300028318
1995	22.948274813933494
1996	23.21285846570851
1997	25.496468105101798
1998	26.559507044153435
1999	28.284957941862242
2000	31.51897581388313
2001	30.135536303500892
2002	28.54518432343587
2003	27.83478297721703
2004	29.1121978690701
2005	29.783028542405997
2006	30.935832313067145
2007	31.76286494492529
2008	30.359400869368503
2009	23.93318015230197
2010	26.97656121091554
2011	29.25820883035037
2012	29.38995484451617
2013	29.02436324126046
2014	30.370285723139855
2015	30.57234447523959
2016	29.877425028265826
2017	31.52649652642771
2018	32.42987758533184
2019	31.96698870264702
2020	29.340220373365746
2021	33.21486717554754
2022	39.66244224314586
2023	34.832466760472236