Year	annual % growth
1981	0.7731538264304163
1982	3.151192039153571
1983	2.0714069840663143
1984	1.7269917582509464
1985	-1.4864169637650235
1986	-0.828820927552556
1987	-0.5032259002252744
1988	-0.4768388481300292
1989	-4.798411219564812
1990	1.5095831374241726
1991	-7.664864197133497
1992	6.76606959450514
1993	0.33380098093344657
1994	-8.009411923291765
1995	-0.2705617586762088
1996	-3.5817473217360316
1997	1.7338893715406414
1998	-1.1096000172420872
1999	0.6752445788627881
2000	9.21118612197273
2001	0.5274946847792421
2002	-0.1691248415349662
2003	-0.24838734796421136
2004	0.35825289822643924
2005	1.2139684494619303
2006	0.7991832339088774
2007	-1.1893607923990572
2008	-0.20512914688023898
2009	3.47620424519819
2010	-2.5123021243720842
2011	1.7407896516217676
2012	1.6868654422203662
2013	2.8042063489978517
2014	1.4302235559135141
2015	4.147782358767245
2016	1.6294204554653504
2017	3.347667465423939
2018	3.4357559536001787
2019	-0.014330378081567119
2020	-7.256720825469429
2021	0.7309656554109978