Year	annual % growth
1961	5.63689798511994
1962	2.10286229886212
1963	6.24984657682211
1964	9.38012614652408
1965	7.48157066514578
1966	8.13009727817638
1967	5.09614336083737
1968	7.34963511223323
1969	6.39699722920277
1970	3.28099686586836
1971	3.24420206995617
1972	2.78586337626206
1973	3.03775435494332
1974	4.31972971523574
1975	-0.881634751317222
1976	-1.73486852341684
1977	7.34964241416614
1978	-1.89045675795259
1979	15.960059134531
1980	1.52554642004388
1981	11.176026136279
1982	9.17958093633678
1983	-15.247981343317
1984	11.9655732447845
1985	9.54857903100591
1986	4.92278887754998
1987	-3.11234004244105
1988	11.279617707573
1989	12.2125965466854
1990	2.99907649173174
1991	-14.4252291764591
1992	-5.74760292751233
1993	10.2623981204218
1994	6.32040095480583
1995	12.5408465994651
1996	2.20406380593761
1997	7.57929822744165
1998	7.81219852965727
1999	6.53122171008053
2000	5.46789872177614
2001	-7.79233193277381
2002	8.15173126465388
2003	11.1998539878099
2004	12.0225733486531
2005	6.83659227720823
2006	5.20673655600264
2007	6.88329975458871
2008	10.1395839473291
2009	-0.711059914001694
2010	3.33981254652467
2011	5.53353176893725
2012	10.82073522707
2013	1.72919839004555
2014	-2.14868646862877
2015	-2.89197289558253
2016	-4.18131522632333
2017	0.402091447219476
2018	4.56628751729029