Year	annual % growth
1977	14.5258884448009
1978	17.7342486377479
1979	17.8415502350094
1980	15.7745281835897
1981	4.32575943170137
1982	-0.769804524986256
1983	0.593193352274099
1984	10.5332865276789
1985	-3.04818177008124
1986	7.26879448752409
1987	10.0557685002222
1988	-1.8706974622675
1989	-0.639663461065481
1990	-14.350359696852
1991	-15.6149405436428
1992	23.8184806633638
1993	6.53427818065835
1994	9.61237848061805
1995	4.98699493187766
1996	-1.77784330199918
1997	5.09491287961681
1998	4.97805763989246
1999	2.93332180028469
2000	6.65009078976627
2001	5.54195238565525
2002	4.0817254779322
2003	0.980335369324052
2004	6.05166578078027
2005	6.7301727092357
2006	10.4059443892372
2007	7.89254791478258
2008	17.4054355455904
2009	6.96966192539344
2010	-8.65615152989476
2011	-2.43286085543389
2012	3.80657914362735
2013	2.73604870124733
2014	1.56323036324584
2015	6.44760899382206
2016	0.383897306350406
2017	4.1164037779733