Year	%
1999	13.43
2000	13.43
2001	13.48
2002	11.3
2003	11.27
2004	11.28
2005	11.27
2006	11.26
2007	11.26
2008	11.28
2009	11.29
2011	11.29
2012	11.3
2013	11.25
2014	11.28
2015	9.94
2016	9.94
2017	9.96
2021	9.96