Year	%
2000	23.26
2001	15.64
2002	15.89
2003	13.65
2004	13.3
2005	11.86
2006	10.37
2007	10.16
2008	10.03
2009	9.03
2010	10.41
2011	10.44
2012	10.19
2013	10.27
2014	5.42
2015	5.36
2016	5.08
2017	3.83
2020	3.86