Year	%
2001	15.12
2002	14.69
2003	14.67
2004	15.11
2005	15.36
2006	13.08
2007	13.82
2008	13.81
2009	13.82
2010	14.12
2011	14.21
2012	13.97
2013	14.13
2014	13.75
2015	12.84
2016	12.92
2017	18.36
2018	18.5
2019	16.05
2020	11.71
2021	11.74