Year	% of GDP
1971	0.13093922603716118
1972	0.1228338906460051
1973	0.12603607412400253
1974	0.37199198122397886
1975	1.11574053414831
1976	1.1312351154441587
1977	1.1643478039031927
1978	1.0389220096949348
1979	0.8962001373691005
1980	1.2036447748243324
1981	1.9316571574365027
1982	2.2729009870605483
1983	1.1831666734705866
1984	0.8872057839536589
1985	1.0475772283095228
1986	0.6147864242343808
1987	0.21539636998469505
1988	0.41308017815603676
1989	0.457107181892979
1990	0.5277726880480198
1991	0.5087353260914603
1992	0.333491284269759
1993	0.14447207253899436
1994	0.1099702177758059
1995	0.2279366243048531
1996	0.13070520975407382
1997	0.10182683425625116
1998	0.10580050572425265
1999	0.06345207150248947
2000	0.10396678043204935
2001	0.37686952843635435
2002	0.16762973891068253
2003	0.15471563713275405
2004	1.1326712388482512
2005	0.8204414354404562
2006	0.8357566685845236
2007	0.998064238273891
2008	2.438558484328311
2009	0.9270435717136527
2010	1.4465125189297678
2011	1.9146156447265716
2012	1.032079619536668
2013	0.6705406874508679
2014	0.5156266790139755
2015	0.2984328623061863
2016	0.3170861175942264
2017	0.4089537892450042
2018	0.4671234705600179
2019	0.36069161913361897
2020	0.3010432280797224
2021	0.5146237256373641