Year	%
1993	18.53
2000	21.02
2001	17.31
2002	17.31
2003	17.31
2007	16.74
2008	16.63
2009	16.71
2010	17.04
2013	16.2
2016	15.23
2017	15.94
2018	16.15
2019	16.1
2020	15.94
2021	15.94