Year	%
2001	15.76
2002	14.56
2003	15.15
2004	13.64
2005	12.04
2007	8.8
2008	8.11
2009	9.27
2010	8.66
2011	8.61
2012	9.13
2013	8.47
2014	8.28
2015	7.77
2017	9.51
2018	9.57
2019	8.47
2020	7.99
2021	7.44