Year	% of GDP
1970	0.2070591848040306
1971	0.23047233839818568
1972	0.2199687893815034
1973	0.22860804299202284
1974	0.7158685972344603
1975	0.4933274478088208
1976	0.3121640246003095
1977	0.5747427826468438
1978	0.19509586506078921
1979	0.24158601998994328
1980	0.30067156698727937
1981	0.13247955459218322
1982	0.1227019775333113
1983	0.14810367399020502
1984	0.16384241108011505
1985	0.171110194972148
1986	0.6119336163940367
1987	0.5194977404003162
1988	0.5660291550789899
1989	0.7472576115109153
1990	0.6002744017966551
1991	0.6253621155604101
1992	0.5649762389164481
1993	0.47584774703697313
1994	0.4797341722468226
1995	0.1731773941430859
1996	0.19318910143970247
1997	0.16793258181164364
1998	0.14630355171413587
1999	0.2547867903028899
2000	0.30361062981499404
2001	0.31266967373034754
2002	0.30089271782768034
2003	0.14326935509300878
2004	0.182237921279647
2005	0.31441681428832846
2006	0.4232004310126555
2007	0.5535941479645224
2008	0.585691656648374
2009	0.6287088620641734
2010	0.7788568360905248
2011	1.077311514993416
2012	0.9609912702621317
2013	0.6876962500999347
2014	0.5256238595910877
2015	0.39870634040204517
2016	0.5303463440323828
2017	0.6573791170180424
2018	0.5816707129294683
2019	0.45422549794580036
2020	0.5821682610971386
2021	1.7209878821959923