Year	%
1996	90.88
1997	90.88
1999	90.88
2000	90.88
2001	90.88
2002	89.14
2003	89.13
2004	89.12
2005	89.09
2006	89.08
2007	89.03
2008	89.04
2009	89.05
2010	89.05
2011	93.09
2012	93.08
2013	93.07
2015	93.29
2016	93.29
2017	93.29
2018	93.29
2019	93.29
2020	93.29
2021	93.29