Year	%
1996	25.13
1997	25.14
1998	25.14
2000	24.98
2001	24.98
2003	24.04
2006	24.04
2008	22
2009	22
2010	22
2011	22
2012	22
2013	22
2014	21.95
2015	21.95
2016	21.95
2019	21.76
2020	21.76
2021	21.76