Year	%
1998	77.61
1999	77.61
2000	77.61
2001	77.61
2002	77.61
2003	71.5
2004	71.5
2005	71.5
2006	71.5
2007	71.5
2008	68.42
2009	68.42
2010	68.42
2011	68.42
2012	69.18
2013	69.18
2015	69.18
2016	69.18
2019	69.82
2020	69.82
2021	69.82