Year	%
1996	50.58
1999	50.6
2000	50.6
2001	50.6
2002	50.6
2003	50.6
2006	50.55
2007	50.49
2008	50.49
2009	50.49
2010	50.49
2011	50.49
2012	50.49
2013	50.49
2015	50.49
2016	50.49
2017	50.49
2018	50.49
2019	50.51
2020	50.51
2021	50.51