Year	%
1996	13.79
1997	14.58
1999	14.99
2000	11.36
2001	10.91
2002	10.2
2003	10.78
2004	10.79
2005	10.4
2006	11.11
2007	10.96
2008	10.96
2009	11.02
2010	11.11
2011	11.52
2012	9.7
2013	9.67
2014	9.66
2015	11
2016	10.99
2017	13.43
2018	13.48
2019	12.53
2020	12.53
2021	12.09