Year	annual % growth
1977	1.9419693850106938
1978	-15.2382572690681
1979	8.988876808889984
1980	13.402320799703531
1981	4.411768427792893
1982	4.225348325313632
1983	-7.432434199792539
1984	-18.24817362754068
1985	9.821430907579654
1986	4.878044481931056
1987	0.7751919395024629
1988	6.138462709602635
1989	16.88859391316106
1990	13.775874833559982
1991	5.220675009763312
1992	2.815402013180929
1993	-37.93327348878097
1994	24.444655064052284
1995	24.38434578717434
1996	2.6688181584751334
1997	2.853264276237894
1998	-9.135146609382133
1999	0
2000	26.229507836045514
2001	8.37505976210555
2002	6.917529176460917
2003	-8.912132598359776
2004	-0.884473964212134
2005	6.951895298692051
2006	10.512173836839068
2007	2.133861281620341
2008	-4.718204482857345
2009	7.455104460447927
2010	1.0691628321644515
2011	4.2315242513413835
2012	-3.460229197268845
2013	32.16371549368935
2014	15.127047796504826
2015	-1.7648956672078668
2016	15.34542932612932
2017	-0.4192228826860145
2018	6.028056981172142
2019	2.2104807814038736
2020	10.738319464600494