Year	% of GDP
1971	0.12043787350064006
1972	0.12998778213139275
1973	0.1402622805492767
1974	0.2446175789642918
1975	0.5422224939362704
1976	0.5615480207202318
1977	0.5131450719716425
1978	0.39504520354758316
1979	0.34169856539463844
1980	0.4263950603930954
1981	0.5392578940706289
1982	0.6159671815347885
1983	0.4540766778172737
1984	0.4132423429810056
1985	0.4273725627496669
1986	0.3280101178313245
1987	0.2276572764560715
1988	0.2849260254567309
1989	0.37990499478247997
1990	0.4068859617030959
1991	0.44974068435278747
1992	0.38997964631117427
1993	0.26881302460966117
1994	0.2553170149568021
1995	0.3498053807566818
1996	0.29792020722460283
1997	0.2557206876128584
1998	0.20460789137168806
1999	0.1670963312107453
2000	0.2149440428667492
2001	0.36256765580483774
2002	0.2560076010561104
2003	0.26370387699840575
2004	0.665599164776023
2005	0.544619707136331
2006	0.5334353459687832
2007	0.6133175305284809
2008	1.3118187318095653
2009	0.6592769430539941
2010	0.8243684030819077
2011	0.9946685730940731
2012	0.6754139653777674
2013	0.523805879699927
2014	0.4302844351802933
2015	0.33989070566508195
2016	0.3749721785379265
2017	0.47006461963298146
2018	0.5624849961130707
2019	0.404699073577285
2020	0.33166296112981886
2021	0.6329016836731479