Year	% of GDP
1977	0.5546590933914579
1978	0.5249342936275304
1979	0.5152652991755485
1980	0.4966616542842522
1981	0.39460092148840614
1982	0.4581074401398675
1983	0.4808136760616932
1984	0.452980749021307
1985	0.4492239403283872
1986	0.40951886238131213
1987	0.3911146110286602
1988	0.38332203989569813
1989	0.36284803253893916
1990	0.34754681316936287
1991	0.36713945067293197
1992	0.3731924946110135
1993	0.38658813842582734
1994	0.40219474142838596
1995	0.4175280660794439
1996	0.4088046846800105
1997	0.40988262360459693
1998	0.40433320683031226
1999	0.41008492319782
2000	0.35633095124547703
2001	0.4103660825818922
2002	0.3961898019589265
2003	0.42347389341042374
2004	0.4197305535393449
2005	0.41155621577526225
2006	0.4064852751527952
2007	0.36589937877456613
2008	0.3904203750994954
2009	0.4225125472246562
2010	0.41656813734631765
2011	0.36531500548431156
2012	0.3526149187211946
2013	0.34507824847352914
2014	0.33118277030738513
2015	0.362614874284735
2016	0.36692987615117206
2017	0.372814469519843
2018	0.35154966489679085
2019	0.3533988242919661
2020	0.3806865636717556
2021	0.38628655431948233
2022	0.3755657223127579
2023	0.28492688311141806