Year	annual % growth
1981	-15.064467068412569
1982	-5.881318174331241
1983	-2.3952239824266854
1984	-2.222918935439097
1985	0.8926520786161944
1986	-3.6555305246602785
1987	-6.7591613974171025
1988	-1.553661056604227
1989	-5.966647667427765
1990	4.990625256044723
1991	-14.077193322641747
1992	-1.3738131637669682
1993	0.499690805731845
1994	-6.984410136412961
1995	-5.286730239504607
1996	2.667353690758347
1997	0.23585524547659986
1998	3.508948674067881
1999	2.9533775125576938
2000	2.513527927219968
2001	8.232967210271227
2002	-17.018374110377763
2003	12.1173050573327
2004	-0.8928020387315172
2005	-1.9803530686812678
2006	2.421662304891555
2007	0.9002456845850588
2008	5.489458596990843
2009	-14.05538271361489
2010	1.1672188676667759
2011	1.2238628264600777
2012	-1.4260985912279267
2013	1.5984718198506727
2014	-0.48222061725947185
2015	2.0433093708412713
2016	5.014919351698339
2017	0.10129272586087268
2018	6.351551390983289
2019	-0.9594479258265807
2020	-7.430073111200869
2021	-3.499176141746446