Year	%
1995	14.86
1997	16.78
2001	18.3
2002	16.86
2003	29.86
2004	29.86
2005	29.49
2006	29.87
2007	17.63
2008	17.62
2009	17.62
2010	17.62
2011	17.43
2012	17.44
2013	17.69
2015	17.52
2016	17.52
2017	17.52