Year	%
1993	5.17
1996	4.11
2001	8.78
2002	9.62
2003	9.48
2004	9.25
2005	8.82
2006	9.48
2007	9.9
2008	9.9
2009	9.47
2010	8.77
2011	9.44
2012	9.26
2013	9.26
2014	7.89
2015	9.42
2016	9.31
2017	9.08
2018	8.92
2019	9.18
2020	9.18
2021	9.18