Year	annual % growth
1981	-20.041680600094153
1982	-2.5569267679950087
1983	-0.5665951342538591
1984	0.8604340325895237
1985	-9.854313505138151
1986	9.68770032183221
1987	19.817376539630487
1988	13.45497663325122
1989	9.643065484507375
1990	43.358444487124245
1991	7.407347073001432
1992	5.719821455728493
1993	5.412283365220816
1994	1.9607475644708927
1995	2.439407237547968
1996	0.08566515925609508
1997	-4.919516751839765
1998	3.8713790540834054
1999	6.227973369350465
2000	0.7669233518898579
2001	3.6623602787727094
2002	4.286068970269213
2003	1.2115170320786888
2004	0.9109280267893354
2005	2.129825837726983
2006	1.6773488820364975
2007	0.6440990900591856
2008	-5.017892480635538
2009	5.2110558649851555
2010	-3.6307422724095773
2011	3.9652335254186255
2012	5.573739451143055
2013	5.9699113105134245
2014	5.130165269565978
2015	10.41135561705768
2016	0.764651884935688
2017	-1.158568550633504
2018	-1.4806440571069857
2019	4.775140301009387
2020	-11.163826921419428
2021	13.01799451771359