Year	%
2000	19.91
2001	12.88
2002	13.2
2003	11.12
2004	11.32
2005	12.27
2006	8.38
2007	8.1
2008	7.6
2009	7.34
2010	7.26
2011	7.18
2012	6.83
2013	6.81
2014	7.1
2015	7.08
2016	7.42
2017	7.68
2020	7.16