Year	Percent
1995	0.02966
1996	0.03304
1997	0.02332
1998	-0.04453
1999	0.00342
2000	0.00621
2001	0.0081
2002	0.02708
2003	0.00555
2004	0.12393
2005	-0.00535
2006	-0.02113
2007	0.27538
2008	0.51579
2009	-0.06287
2010	0.13077
2011	0.48153
2012	0.36515
2013	0.38521
2014	0.51144
2015	0.10779
2016	0.23971
2017	0.03309