Year	% of GDP
1971	4.8178377090179385
1972	4.909025068325381
1973	7.362189877580715
1974	28.798569014464555
1975	22.644353171565147
1976	21.23326369715032
1977	20.18125484044379
1978	18.646116282472896
1980	29.801402169240664
1981	10.613046104116322
1982	6.6773698916338455
1983	9.744804535278918
1984	11.908033123326199
1985	12.294529857043274
1986	6.15648936470534
1987	8.475076083265305
1988	7.2191403301789485
1989	12.161426399417536
1990	12.19348663034746
1991	8.138221332969728
1992	9.441067851499211
1993	11.807753948657632
1994	13.471658662367284
1995	12.41498091657505
1996	14.484723238056791
1997	12.549202002964694
1998	7.404744335387797
1999	11.372476481605052
2000	18.74852717876685
2001	14.580066800651053
2002	14.016210975158568
2003	13.819113989359645
2004	17.262687370383695
2005	20.910611988281232
2006	20.28875685145333
2007	17.909177220722412
2008	20.322348062099422
2009	11.610500961412761
2010	14.12756005513545
2011	18.152592721374106
2012	17.171923222696574
2013	14.342008122874896
2014	11.608312365572809
2015	6.639073174860492
2016	6.072965656266439
2017	8.888555579567168
2018	11.910448899030618
2019	10.51828760483603
2020	5.399844865955748
2021	10.550522646819793