Year	%
1996	61.03
1997	61.03
1998	61.03
1999	61.03
2000	61.03
2001	61.03
2002	60.17
2003	60.17
2004	60.17
2005	60.17
2006	60.17
2007	60.17
2008	59.28
2009	59.28
2010	59.28
2011	59.28
2012	51.73
2013	51.73
2014	51.73
2015	51.73
2016	51.73
2017	52.44
2018	52.44
2019	52.4
2020	52.4
2021	52.4