Year	%
1995	34.78
1996	34.8
1997	34.8
1998	34.8
1999	34.8
2000	34.8
2001	34.8
2002	33.73
2003	33.88
2004	33.79
2005	33.76
2006	33.76
2007	33.75
2008	33.73
2009	33.7
2010	33.7
2011	33.69
2012	33.69
2013	33.63
2014	33.63
2015	35
2016	35
2017	35
2018	35