Year	annual % growth
1971	5.212454548227342
1972	4.407106816367644
1973	6.202407820856834
1974	0.5948788623286987
1975	-0.3323516140627021
1976	3.865215396524974
1977	2.737074096523557
1978	5.797591061238805
1979	3.220128190482697
1980	-0.3785709077735504
1981	-0.5312350221678628
1982	1.8987273051071867
1983	1.1297969689834986
1984	0.9653545769342458
1985	2.458457012025434
1986	5.330287051004618
1987	2.841369872108231
1988	5.192704623071236
1989	3.590135887808515
1990	2.767992402049657
1991	0.10778977806020862
1992	1.9391105849256007
1993	-0.4452552437102497
1994	2.2355650864692933
1995	2.1372297966901357
1996	1.7986495486400145
1997	2.9129556207400356
1998	4.312305482316219
1999	4.210403339277249
2000	2.523603417829804
2001	2.0889144904929253
2002	0.4050872389957334
2003	0.9007568943236066
2004	2.5954564722562736
2005	1.3808726550297052
2006	2.029929915050772
2007	2.6298668171753263
2008	-0.409753236525944
2009	-2.840933575659392
2010	1.706855989321724
2011	1.7404848287732193
2012	-0.5636052112029404
2013	1.0148252903658914
2014	1.2643337670793073
2015	2.356374531816101
2016	1.253959379030107
2017	1.9179283246817818
2018	1.356624174241361
2019	1.6139884281486587
2020	-9.692485730774692
2021	9.025603234532767