Year	%
1996	87.4
1997	87.68
1998	87.68
1999	87.68
2000	87.68
2001	87.68
2002	87.68
2003	87.68
2006	87.57
2007	87.57
2010	87.57
2011	87.8
2012	87.8
2013	87.8
2015	87.8
2016	87.8
2017	87.8
2020	89.68