Year	%
1996	11.93
1997	12.81
1999	12.13
2000	11.85
2001	11.23
2002	10.26
2003	11.35
2004	11.38
2005	11
2006	11.85
2007	11.39
2008	11.39
2009	10.73
2010	10.81
2011	11.65
2012	9.54
2013	9.52
2014	9.51
2015	9.31
2016	9.3
2017	12.4
2018	11.73
2019	10.01
2020	10.01
2021	10.39