Year	Percent
2001	6.61116
2002	6.69138
2003	6.96521
2004	7.04645
2005	7.13567
2006	7.0433
2007	6.91726
2008	7.65603
2009	7.49812
2010	7.83468
2011	8.68592
2012	9.02456
2013	8.96241
2014	8.63538
2015	8.49835
2016	8.76503