Year	%
2001	16.49
2002	16.28
2003	16.47
2005	11.08
2006	10.86
2007	11.68
2008	11.42
2010	9.5
2011	8.94
2012	9.08
2014	8.34
2016	9.77
2020	9.62
2021	8.66