Year	Percent
1982	0.14926
1983	-0.10975
1984	-0.0701
1985	0.16695
1986	0.07653
1987	-0.06651
1988	0.028
1990	0
1991	0
1992	0
1993	0
1994	0
1995	0
1996	0
1997	0.05507
1998	0.03663
1999	-0.01251
2000	-0.02184
2001	0.09461
2002	-0.00114
2003	0.01151
2004	0.27809
2005	0.08919
2006	0.07062
2007	0.50687
2008	0.08354
2009	0.28556
2010	-0.3915
2011	0.37362
2012	7.54629
2013	-3.53541
2014	2.30376
2015	3.01335
2016	0.8519
2017	0.44455