Year	%
1993	5.17
1996	4.11
2001	8.78
2002	9.62
2003	9.48
2004	9.25
2005	8.82
2006	9.45
2007	9.86
2008	9.86
2009	9.45
2010	8.74
2011	9.38
2012	9.21
2013	9.21
2014	7.87
2015	9.22
2016	8.98
2017	9.08
2018	8.8
2019	8.87
2020	8.87
2021	8.87