Year	%
2006	7.49835868728662
2007	8.12576527218602
2008	8.01713042293726
2009	8.41159531801698
2010	8.52694513123191
2011	7.83666891526132
2012	7.80675748469554
2013	8.5231058704958
2014	9.21213319829624
2015	10.0338856006863
2016	10.4577565481486
2017	10.7278054805654
2020	11.1375664059677
2021	10.705811040827
2022	10.3867606905697