Year	% of GDP
1975	0.0626678567378007
1976	0.05445016348396919
1977	0.03843466721027947
1978	0.069998359415504
1979	0.24722379117750742
1980	0.5320638958133053
1981	0.3352638346834812
1982	0.20905760886830307
1983	0.10490882872029889
1984	0.08898796860816609
1985	0.07837139057566414
1986	0.1563641659966417
1987	0.49828073891653785
1988	0.657336146854973
1989	0.32952159779701823
1990	0.9096831896263338
1991	0.5501945954021019
1992	2.316409313969068
1993	0.12277578500245753
1994	0.25172865182309073
1995	0.26046289970208736
1996	0.20473835448974273
1997	0.1299900011377586
1998	0.10860245820747884
2005	0
2006	0
2007	0
2008	0
2009	0
2010	0
2011	0
2012	0
2013	0
2014	0
2015	0
2016	0
2017	1.134834170782601
2018	0.8080745048784563
2019	0.816476672490999
2020	2.04176529806242
2021	0.14285901732848214
2022	1.1216043005520562
2023	0.5740211207222436