Year	% of GDP
1980	33.9963553177465
1981	35.48781364584082
1982	34.12952814255679
1983	32.88992641189216
1984	33.203350709957725
1985	32.19727997594745
1986	35.87634136847181
1987	32.90383862605491
1988	34.4174353437597
1989	33.109057282613094
1990	25.588778293303015
1991	22.597641857037583
1992	19.88894422310757
1993	15.28203412512546
1994	9.39117199391172
1995	17.728782442577547
1996	1.157310989379276
1997	9.727381637492403
1998	18.708605029214244
1999	19.843699636496297
2000	19.04614348576776
2001	21.35107178927932
2002	20.529020879920555
2003	22.07417338832446
2004	23.433352110250315
2005	27.739671660863124
2006	32.05633531259893
2007	33.60623366236137
2008	36.92453897480459
2009	28.538220709301186
2010	22.51796856245852
2011	21.358182960015096
2012	21.88708498697552
2013	21.006010898780467
2014	21.50783394072574
2015	20.999929598052663
2016	18.962432490032793
2017	19.816998470642165
2018	21.223678980675132
2019	21.00717560707581
2020	20.345955357774564
2021	21.079227868685045
2022	23.37647004055373
2023	18.849979110819437