Year	%
2001	10.69
2002	7.88
2005	6.03
2007	6.28
2008	6.15
2009	6.1
2010	5.65
2011	5.76
2013	5.92
2015	6.26
2016	6.48
2017	6.49
2018	6.49
2021	6.78