Year	% of GDP
1971	0.535680880493544
1972	0.5718369531316172
1973	0.5763129048191807
1974	0.5977464201806114
1975	0.4199255866107795
1976	0.3269025638027608
1977	0.4104862630083303
1978	0.4334367649081267
1979	0.393480893435373
1980	0.3573235203208332
1981	0.37302596106950975
1982	0.33507797584237575
1983	0.3876024263828893
1984	0.40313012425253014
1985	0.4196045433301384
1986	0.3968710105778472
1987	0.560994668570484
1988	0.7492889666987108
1989	0.984278397759278
1990	1.0429755579790034
1991	0.9088540758451711
1992	0.8985939499072644
1993	0.9628593493937632
1994	0.8669256419601189
1995	1.062937447992792
1996	1.2371263425333925
1997	1.3165028717900173
1998	2.4349594889076807
1999	4.971266270209706
2000	8.559314728199432
2001	4.871208343514023
2002	3.5182284647574225
2003	3.043811507681777
2004	2.660597891899124
2005	6.006415889072852
2006	7.310692590054528
2007	9.9401771810219
2008	4.655805981456983
2009	3.393818085008877
2010	4.233895118502018
2011	5.981349482532047
2012	4.292719895692305
2013	4.5600087086685726
2014	2.8598029777874814
2015	6.7076536469139345
2016	4.932450528362856
2017	3.7871169271709237
2018	-0.41059532260841947
2019	2.6579727166767775
2020	0.046684204273872015
2021	2.621908672630584
2022	0.12937600561930357