Year	% of GDP
1980	28.261796750804546
1981	27.64397152922568
1982	27.480784475924587
1983	26.745285866655934
1984	25.612470753909744
1985	26.42344141640052
1986	26.98975708666678
1987	26.873667238778804
1988	26.75700415437696
1989	26.09451429033432
1990	21.26409432790049
1991	18.154016212232868
1992	16.22360557768924
1993	12.954834392773504
1994	13.760844748858448
1995	16.668561085603958
1996	4.452209027409781
1997	9.680986963411836
1998	14.593758330959314
1999	16.25537037670024
2000	16.731171830777587
2001	19.26591831950546
2002	18.977259838880904
2003	19.80513845344512
2004	20.95071667282707
2005	25.665164522630423
2006	27.437745059378344
2007	28.28880358874616
2008	32.97962008042357
2009	27.78101394936546
2010	22.182226726216715
2011	20.83925147050927
2012	21.12244029209649
2013	21.182532427860178
2014	21.06085790497298
2015	20.859778813738576
2016	18.41046385181144
2017	18.30381274432789
2018	18.763166013886874
2019	18.616780990691918
2020	19.072665356349162
2021	16.34753511737641
2022	17.05948554265655
2023	17.304758817382574