Year	% of GDP
1970	0.6786217886668002
1971	0.6372483103812984
1972	0.6397131045700685
1973	0.7920055620772171
1974	0.711396813023547
1975	0.5565581372795645
1976	0.6399008888800929
1977	0.5812053681607036
1978	0.6450748948677006
1979	0.868359494830042
1980	0.7119020553200258
1981	0.8397255540737428
1982	0.590591742272581
1983	0.6754375061911632
1984	0.8324490954719422
1985	0.9742103792610209
1986	1.1071842846762503
1987	1.2383122476256145
1988	1.6990472388424356
1989	1.835179095888278
1990	1.8289796740296542
1991	1.4504300008537916
1992	1.2519971621037997
1993	1.2596706267885316
1994	1.560407594126485
1995	1.762284456341046
1996	2.0693781927754085
1997	2.6197906052320272
1998	4.608115241825631
1999	7.943447503928949
2000	9.720404553209677
2001	5.070825036928442
2002	3.2131018473101034
2003	2.860808537028113
2004	3.7745709861778347
2005	6.962271351808615
2006	8.052898286192342
2007	10.187451557733024
2008	7.114332703468004
2009	3.143198096428271
2010	4.06246411690769
2011	4.950567896365297
2012	3.271862155820568
2013	3.8919796398466917
2014	2.424719671539389
2015	5.226567687864921
2016	5.11203076439212
2017	4.146215554505072
2018	0.6062764366591477
2019	2.5810894292848157
2020	0.3558462822034114
2021	4.171626207494347
2022	2.216343312295917