Year	%
1995	10.26
1996	11.45
1997	10.3
1998	11.45
1999	11.45
2000	9.58
2001	8.79
2002	13.13
2003	12.99
2004	12.81
2005	12.92
2006	12.29
2007	11.21
2008	11.08
2009	11.08
2010	10.85
2011	11.15
2012	10.58
2013	11.42
2014	10.85
2015	8.11
2016	8.11
2017	6.86