Year	%
1994	14.6
1997	15.21
2001	11.35
2002	11.35
2003	11.25
2004	11.25
2005	11.4
2006	11.25
2007	15.39
2008	15.36
2009	15.36
2010	15.36
2011	15.36
2013	15.44
2014	15.38
2015	9.94