Year	% of GDP
1967	61.717616094159396
1968	57.89334897212586
1969	56.77479819769553
1970	57.82877251710746
1971	57.07615928264732
1972	55.79488106972228
1973	51.6112822040837
1974	46.05580077284927
1975	57.50932406809268
1976	55.12433915252325
1977	55.177103505122005
1978	52.13692703677955
1979	55.00661578002214
1980	41.58998397583651
1981	42.6127352440114
1982	40.40048228687247
1983	37.038975880241516
1984	36.69367364221103
1985	36.96281899671157
1986	35.60660600497613
1987	36.9142295082306
1988	39.945602643012414
1989	38.16033363247446
1990	37.41767938820168
1991	39.274664390598645
1992	36.99633280697988
1993	39.046650681314176
1994	36.835693633346224
1995	37.708953664717946
1996	36.87920679385045
1997	35.96217164532035
1998	34.56067086438096
1999	35.55571603086322
2000	32.901867724712226
2001	32.81360595904333
2002	32.71418374526014
2003	29.876629850164367
2004	30.015509870027916
2005	32.378481840770725
2006	29.79050882841991
2007	31.3528746829182
2008	32.97032081222076
2009	31.735706312964577
2010	33.01683002961464
2011	34.558630578506055
2012	38.11410247530052
2013	36.75281627261274
2014	37.45676773592575
2015	37.723256867530836
2016	37.403702997444036
2017	37.43243962675146
2018	37.61244315801755
2019	37.30779731919628
2020	36.18804497003432
2021	35.68182612298871
2022	35.82762610095284
2023	36.78062709302655