Year	%
1995	68.73
1996	68.43
1997	68.43
1998	68.43
1999	68.43
2000	68.43
2001	68.43
2002	68.49
2003	68.49
2004	68.49
2005	68.49
2006	68.49
2007	66.92
2008	65.61
2009	65.61
2010	65.61
2011	65.61
2012	65.76
2013	65.76
2014	65.76
2015	67.69
2016	67.69
2017	67.69
2018	67.69
2019	67.43
2020	67.43
2021	67.43