Year	% of GDP
1966	20.483060867071543
1967	20.99200765990287
1968	22.06218506622162
1969	20.731310852356533
1970	19.54480651939922
1971	20.330889192044992
1972	21.310192088053547
1973	22.175553988434775
1974	24.101756157225278
1975	22.7398561236745
1976	21.65834332998656
1977	23.6602340728822
1978	24.558671522918953
1979	26.019091052692477
1980	27.77277747278502
1981	17.172474145419788
1982	16.77407062630559
1983	18.681454601859457
1984	20.66684961749324
1985	21.06403508212561
1986	24.567555143640217
1987	25.692595002883994
1988	25.233043651651954
1989	25.243976241878574
1990	23.542606125017404
1991	21.295907095011053
1992	23.902122084030804
1993	23.991806263049433
1994	24.486278846539804
1995	22.574238376526512
1996	21.515094400569044
1997	20.598863019328547
1998	19.442220272612907
1999	27.148306021953587
2000	28.06482245487133
2001	28.35564747733934
2002	27.72510313116993
2003	26.62471690892025
2004	26.779452046285208
2005	27.845966813105406
2006	28.10902561780488
2007	29.645899659458735
2008	31.70836937942059
2009	26.062967844883477
2010	27.78109269505552
2011	29.599626827394342
2012	27.835786979687605
2013	25.781114753177476
2014	24.62760505601741
2015	21.528723625694525
2016	21.646245758795242
2017	23.54333460467165
2018	24.553603342234375
2019	22.98407074910694
2020	21.119208855399005
2021	24.858976766785187
2022	26.890649154616952
2023	25.776258283902354