Year	%
1995	19.43
1997	20.87
2001	23.73
2002	22.72
2003	27.27
2004	27.27
2005	23.48
2006	27.33
2007	17.92
2008	17.92
2009	17.92
2010	17.92
2011	19.41
2012	22.26
2013	17.29
2015	17.14
2016	17.14
2017	17.14