Year	%
1996	20.31
1997	9.86
1998	9.88
1999	16.93
2000	13.15
2001	8.24
2002	8.3
2003	8.3
2006	8.16
2007	8.16
2010	8.92
2011	8.04
2012	8.85
2013	8.04
2015	7.92
2016	7.92
2017	7.92
2020	7.91