Year	%
1996	26.38
1999	26.57
2000	26.58
2001	16.27
2002	16.27
2003	16.27
2006	16.72
2007	17.29
2008	17.33
2009	17.28
2010	17.33
2011	17.33
2012	17.33
2013	17.16
2015	17.33
2016	17.33
2017	17.33
2018	17.33
2019	18.96
2020	18.96
2021	18.96