Year	annual % growth
1971	8.442567284728142
1972	8.349055629022459
1973	13.100542590326853
1974	-0.4490660100257742
1975	-10.103844043058743
1976	3.18117073116413
1977	3.0086887684910266
1978	-1.0865500683752742
1979	3.194399337182489
1980	0.920289681962231
1981	-2.4235268590406207
1982	-0.4617325531298917
1983	0.9502385413174608
1984	-2.6036421966234116
1985	5.799941698880133
1986	11.678235056158016
1987	6.776298800672009
1988	7.5467607000284005
1989	6.707798088277812
1990	7.493385571633212
1991	4.618042447731938
1992	4.495182087081105
1993	-1.1375972218326496
1994	2.8753483072753454
1995	0.9790449789154394
1996	2.3899430768711767
1997	3.401314546148143
1998	5.337509815949716
1999	3.7385594139583134
2000	-0.1957860311618589
2001	1.2525791698843705
2002	1.1465248091643332
2003	-0.5736019489094133
2004	0.9833723103670451
2005	0.05879784636069019
2006	-0.38383091763698474
2007	2.6853314424065218
2008	-2.2006659048422677
2009	-1.60655221037743
2010	1.1026895177327845
2011	-1.0481170853976778
2012	-4.602085140528601
2013	2.275805951701713
2014	0.6677577343950247
2015	2.952803686587501
2016	3.3298501888906458
2017	3.446852590548616
2018	2.2489102202111013
2019	2.7191385239497095
2020	-9.17459663686283
2021	4.273342326581854