Year	% of GDP
1970	0.541555941338137
1971	0.4332958205898927
1972	0.45322011454611705
1973	0.4959338133264429
1974	0.36803254379005085
1975	0.5947489782203446
1976	0.403032120599911
1977	0.45879810240120916
1978	0.733598103855613
1979	0.6508843049002089
1980	0.6412843423423324
1981	0.841568277569463
1982	0.9095482576987834
1983	0.9490363756755459
1984	1.0295176042910041
1985	1.0884267755938644
1986	1.3729840104072784
1987	1.4339546340420906
1988	1.8663761491446607
1989	2.0321244468199207
1990	2.6061667896210143
1991	2.1645036351239897
1992	2.1041981348061825
1993	2.0584015770247257
1994	1.6534575876944586
1995	1.3474594527176365
1996	1.5252952240573319
1997	1.598716049678679
1998	2.5378362130010212
1999	3.091564175074601
2000	6.7700927304217755
2001	4.604656616781331
2002	5.553345714615503
2003	3.3879000415480394
2004	2.3635993180716985
2005	2.3409382372644143
2006	2.6124935071797784
2007	4.628870250924347
2008	4.5401242303745395
2009	0.6402941123081628
2010	2.5743006272005804
2011	1.8121052422055455
2012	1.5737661800170586
2013	3.4946856738338083
2014	2.4014261306593694
2015	1.925923718590839
2016	3.5874639226557723
2017	2.4036144121704033
2018	4.123659564510288
2019	1.8561486369610862
2020	2.9983636089852452
2021	3.956001490207697
2022	3.6271011681491485