2011

11.80%

14.63%

2012

11.80%

14.73%

2013

11.80%

15.26%

2014

11.80%

14.21%

2015

11.80%

14.28%

2016

11.80%

14.81%

2017

11.80%

14.48%

2018

11.80%

15.43%

2019

11.80%

14.87%