Year	%
1996	28.78
1997	29.07
1998	29.07
1999	29.07
2000	29.07
2001	29.07
2002	26.72
2003	26.72
2007	23.64
2010	23.64
2011	26.68
2012	26.68
2015	24.06
2016	24.06
2021	24.81