Year	%
2001	10.34
2002	9.14
2004	8.82
2005	9.95
2006	8.68
2007	9.18
2008	8.32
2009	8.31
2010	7.68
2011	7.02
2012	5.16
2013	4.85
2014	5.61
2015	4.67
2016	5.58
2017	6.47
2018	5.54
2019	6.04
2020	5.24
2021	4.81