Year	Percent
1983	-0.19101
1984	0.71589
1985	3.43377
1986	5.13602
1987	0.21912
1988	-1.69019
1989	3.33793
1990	-4.93084
1991	-3.02051
1992	-1.10052
1993	3.08082
1994	-3.45496
1995	5.8154
1996	6.47438
1997	0.10864
1998	1.7323
1999	1.73025
2000	6.39525
2001	6.35745
2002	3.74363
2003	3.88013
2004	3.97015
2005	3.49194
2006	1.31283
2007	5.62738
2008	0.32662
2009	-5.47782
2010	-0.26497
2011	4.95561
2012	-0.40931
2013	-2.73738
2014	0.38938
2015	0.86422
2016	6.39508
2017	1.81385