Year	%
1995	60.7
1997	65.81
1998	60.7
1999	65.75
2000	65.75
2001	65.75
2002	65.75
2003	65.75
2004	65.03
2005	65.03
2006	65.03
2007	65.6
2008	65.59
2009	65.58
2010	65.56
2011	65.54
2012	65.53
2013	65.51
2014	60.8
2015	60.94
2016	60.94
2017	60.94
2018	60.94
2019	61.29