Year	%
2008	14.4959695093475
2009	14.7656072014188
2010	13.6500697343973
2011	15.4989623589473
2012	15.2550150731634
2013	13.5084390852533
2014	13.6661894541378
2015	14.0710956479358
2016	14.4380562061415
2017	13.8421504299584
2018	16.1672672662752