Year	%
1997	69.21
1998	69.75
2000	69.75
2001	69.75
2003	69.15
2004	69.15
2005	69.15
2006	69.15
2007	69.37
2008	69.37
2009	69.37
2010	69.37
2011	69.37
2012	73.35
2014	73.35
2015	73.35
2017	73.35
2018	73.48
2019	73.42
2020	73.42
2021	73.42