Year	%
2001	11.72
2002	9.49
2004	11.08
2005	11.24
2006	10.66
2007	10.22
2008	9.74
2009	10.14
2010	10.01
2011	10.01
2012	8.97
2013	8.48
2014	8.49
2015	7.54
2016	8.17
2017	9.04
2018	7.64
2019	8.88
2020	8.07
2021	8.2