Year	% of GDP
1977	1.35657256914742
1978	2.87490900266925
1979	3.50149938260716
1980	3.20762052877138
1981	2.97829811536265
1982	2.69474386042894
1983	2.32633769837828
1984	2.4372708318355
1985	2.18473148857049
1986	2.6635958026935502
1987	4.794414574710871
1988	4.89967702289422
1989	3.56901008012406
1990	4.4451580347722395
1991	4.60346992729676
1992	4.48280904912553
1993	4.9334919729800895
1994	4.00812039559554
1995	3.5064797194977704
1996	2.89952149833484
1997	3.19720462718414
1998	3.7793988444373103
1999	3.09207375530236
2000	3.19124295081058
2001	3.83122303260369
2002	4.11020648951656
2003	4.00736658870518
2004	3.5058740413487404
2005	2.85800418504025
2006	2.75454609516549
2007	2.90001468952761
2008	3.0976203987662
2009	3.26282073750534
2010	2.75907988033428
2011	2.4044300323857697
2012	2.3437721258219297
2013	2.1471710497406997
2014	2.21199714449013
2015	2.82519449903662
2016	3.41066258273304
2017	3.2485791949909104
2018	2.92475944543875
2019	3.08122244554008
2020	3.33478768726661
2021	3.0455693242641897
2022	2.74395956341177