Year	%
1995	13.71
1997	13.88
2001	22.51
2002	19.76
2003	29.88
2004	29.88
2005	29.24
2006	29.89
2007	17.61
2008	17.61
2009	17.61
2010	17.61
2011	19.98
2012	21.91
2013	17.89
2015	17.24
2016	17.24
2017	17.24