Year	Percent
1982	0.3115
1983	10.33709
1984	-0.87543
1985	-10.59069
1986	18.74658
1987	4.30718
1988	3.11671
1989	-5.44893
1990	-0.54528
1991	-2.3423
1992	5.18146
1993	4.58712
1994	4.77445
1995	7.2799
1996	-10.97652
1997	-6.97233
1998	-3.28017
1999	-2.68577
2000	5.72828
2001	5.3149
2002	2.66504
2003	0.25086
2004	0.19929
2005	2.95302
2006	1.3919
2007	3.53587
2008	-1.79744
2009	-1.82773
2010	6.24043
2011	0.98116
2012	3.22016
2013	2.60679
2014	-0.95394
2015	-0.54504
2016	1.77222
2017	2.38231