Year	% of GDP
1971	0.18328944370221253
1972	0.2001988663698237
1973	0.18996412676820948
1974	0.1096174252149443
1975	0.2155638432349671
1976	0.19599060711814564
1977	0.23515195876643755
1978	0.32298249764617115
1979	0.5314962992899598
1980	0.3527654724719318
1981	0.36003900725251015
1982	0.1608197452124219
1983	0.6343982823395214
1984	0.6404163137274573
1985	0.6753664558084832
1986	0.8410294760110529
1987	0.7830947476697766
1988	0.8570420259415499
1989	0.8582483727757837
1990	0.6611219574370739
1991	0.9003749335706017
1992	0.9409634346092669
1993	0.9861832730865768
1994	1.017237458012245
1995	1.1142094042750845
1996	1.1869047035028684
1997	1.2747450822074515
1998	1.2931236949740297
1999	1.1669575068698108
2000	1.3953888454192322
2001	1.7175043250491473
2002	1.5303724982007798
2003	1.3835396996722866
2004	1.3313893212901555
2005	1.558729953769437
2006	1.5820174109773628
2007	1.4735676135883615
2008	1.3131970215233868
2009	1.6030766012385482
2010	1.406799817123761
2011	1.602772698289393
2012	1.6103697610914787
2013	1.60769409058788
2014	1.4993045811723753
2015	1.271152256600749
2016	1.0057221614683507
2017	1.2052845789017117
2018	1.7722422962022968
2019	1.749202001777503
2020	1.968038957696004
2021	2.8542857641565944