Year	Percent
1980	0.00014
1981	0.00034
1982	0.00036
1983	0.00032
1984	-0.00044
1985	-0.03969
1986	-0.00044
1987	0
1988	0.00154
1989	-0.0713
1990	0.00051
1991	-0.00181
1993	0.0107
1994	0.00887
1995	0.01868
1996	0.20667
1997	-0.05945
1998	-0.14258
1999	0.03207
2000	0.14853
2001	0.03438
2002	0.03362
2003	0.01636
2004	0.11211
2005	-0.01191
2006	1.16512
2007	1.32557
2008	-0.29323
2009	-0.97175
2010	-0.37697
2011	-0.137
2012	0.45089
2013	-0.62335
2014	0.26762
2015	0.03256
2016	0.15122
2017	0.03582