Year	%
1993	14.9
2000	14.64
2001	13.07
2002	13.07
2003	13.07
2004	13.1
2007	13
2008	13
2009	13
2010	13
2013	12.91
2016	12.15
2017	12.05
2018	12.05
2019	12.05
2020	12.17
2021	12.17