Year	%
1992	5.66
1995	11.63
1996	11.99
1997	12.19
1998	14.38
1999	14.49
2000	14.7
2001	14.62
2002	13.71
2004	13.73
2005	11.49
2006	11.24
2007	11.24
2008	11.17
2009	11.17
2010	11.18
2011	11.15
2012	11.15
2013	11.24
2014	11.2
2015	11.2
2016	11.1
2017	11.14
2018	11.13
2019	11.1
2020	11.1
2021	11.01