Year	annual % growth
1977	11.5734624421138
1978	14.6524577765868
1979	14.5066012384874
1980	12.129278194128
1981	0.648892739360264
1982	-4.58904222455769
1983	-3.46903630133991
1984	6.04560325016577
1985	-6.91234850034111
1986	3.16879360380173
1987	5.96189812585226
1988	-5.63012936650891
1989	-4.81280168781511
1990	-18.3509890176926
1991	-19.9818748205477
1992	17.0581438742704
1993	0.857519503949277
1994	4.42289094088105
1995	0.903503994527838
1996	-4.76654124371379
1997	2.58733066337811
1998	2.95165662597037
1999	1.13748814978977
2000	4.76107515080955
2001	3.62336493218997
2002	2.12105699140402
2003	-1.18502488790219
2004	3.27289154430046
2005	3.29831941836002
2006	6.24319910718107
2007	3.34349805817426
2008	12.011948009224
2009	1.74347624799871
2010	-13.2887812204771
2011	-7.54593833555847
2012	-1.68137443782523
2013	-2.44328098526147
2014	-2.98692537993827
2015	2.46697276585293
2016	-2.61025733726621
2017	1.6920750705594