Year	%
2001	16.54
2002	16.54
2003	16.04
2004	16.31
2005	16.17
2006	12.34
2007	16.38
2008	14.49
2009	14.65
2010	14.92
2011	15.02
2012	15.27
2013	16.59
2014	15.53
2017	19.24
2018	18.66
2019	16.64
2020	16.82
2021	16.74