Year	% of GDP
1965	18.74996222197731
1966	18.39582336168076
1967	19.36988495500605
1968	19.71516869009401
1969	20.109624135407422
1970	20.24615237438224
1971	22.217112175472383
1972	21.346057616266986
1973	23.006239578706463
1974	21.755937351960746
1975	22.536641730422968
1976	20.54721824601287
1977	21.27562729938732
1978	22.612260666536553
1979	22.389367757092657
1980	23.0484216157798
1981	17.962210168059187
1982	18.636981939578533
1983	21.822561251951274
1984	22.30986744780696
1985	19.914992404207254
1986	21.95797873601162
1987	23.73651478863906
1988	24.480569285291942
1989	24.513704141523
1990	23.767946342958297
1992	27.8868939650008
1993	26.333847551232836
1994	27.13114047983072
1995	25.62949906917339
1996	23.546951534175275
1997	24.01480776138678
1998	24.1267895792014
1999	30.7848743884921
2000	29.20249970835387
2001	29.79290897013259
2002	22.731196296399528
2003	26.658466843550464
2004	27.666692113420066
2005	27.73694602663815
2006	28.254703682133776
2007	30.405741419705993
2008	29.158466906072025
2009	31.0669482250724
2010	29.35687309084769
2011	27.913153153192226
2012	27.47736960904986
2013	26.060930784707526
2014	26.029311540523796
2015	27.30287140995766
2016	27.815502257805218
2017	27.94054738278458
2018	26.14400855407937
2019	25.679538779358776
2020	26.412158511884922
2021	26.442662447525354
2022	26.412827252182566