Year	%
1993	4.89
1996	4.1
2001	7.22
2002	9.69
2003	9.61
2004	8.54
2005	7.61
2006	7.38
2007	6.65
2008	6.65
2009	7.57
2010	7.23
2011	7.07
2012	6.74
2013	6.74
2014	6.44
2015	8.37
2016	8.74
2017	10.28
2018	10.34
2019	8.24
2020	8.15
2021	8.15