Year	%
2001	14.23
2002	12.29
2003	12.68
2005	12.51
2006	11.78
2007	10.53
2008	10.39
2009	8.64
2010	8.63
2011	10.35
2012	8.63
2014	7.1
2016	6.78
2018	8.76
2020	8.75
2021	8.56