Year	%
1995	15.81
1996	15.74
1997	15.74
1998	15.74
1999	15.74
2000	15.74
2001	15.74
2002	17.04
2003	16.94
2004	16.64
2005	16.64
2006	16.67
2007	16.92
2008	16.86
2009	16.82
2010	16.81
2011	16.81
2012	18.22
2013	18.23
2014	18.23
2015	16.48
2016	16.48
2017	16.55
2018	16.55
2020	16.55
2021	16.55