Securities and Exchange Commission

Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum

The estimated measure of the minimum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

Compare To Other Companies

Annual (pure)

Value	Reported On	Form	FY	FP	Start Date	End Date	Fiscal Period
0.81	2013-03-01	40-F	2012	FY	2010-01-01	2010-12-31	CY2010
0.79	2014-03-03	10-K	2013	FY	2011-01-01	2011-12-31	CY2011
0.63	2015-03-02	10-K	2014	FY	2012-01-01	2012-12-31	CY2012
0.61	2016-02-26	10-K	2015	FY	2013-01-01	2013-12-31	CY2013
0.61	2017-03-03	10-K	2016	FY	2014-01-01	2014-12-31	CY2014
0.55	2017-03-03	10-K	2016	FY	2015-01-01	2015-12-31	CY2015
0.57	2017-03-03	10-K	2016	FY	2016-01-01	2016-12-31	CY2016
0.56	2020-02-28	10-K	2019	FY	2017-01-01	2017-12-31	CY2017
0.54	2020-02-28	10-K	2019	FY	2018-01-01	2018-12-31	CY2018
0.59	2020-02-28	10-K	2019	FY	2019-01-01	2019-12-31	CY2019

All Reported Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum (pure)

Value	Reported On	Form	FY	FP	Start Date	End Date	Fiscal Period
0.81	2013-03-01	40-F	2012	FY	2010-01-01	2010-12-31	CY2010
0.79	2014-03-03	10-K	2013	FY	2011-01-01	2011-12-31	CY2011
0.79	2013-03-01	40-F	2012	FY	2011-01-01	2011-12-31
0.63	2015-03-02	10-K	2014	FY	2012-01-01	2012-12-31	CY2012
0.63	2014-03-03	10-K	2013	FY	2012-01-01	2012-12-31
0.63	2013-03-01	40-F	2012	FY	2012-01-01	2012-12-31
0.61	2016-02-26	10-K	2015	FY	2013-01-01	2013-12-31	CY2013
0.61	2015-03-02	10-K	2014	FY	2013-01-01	2013-12-31
0.61	2014-03-03	10-K	2013	FY	2013-01-01	2013-12-31
0.61	2017-03-03	10-K	2016	FY	2014-01-01	2014-12-31	CY2014
0.61	2016-02-26	10-K	2015	FY	2014-01-01	2014-12-31
0.61	2015-03-02	10-K	2014	FY	2014-01-01	2014-12-31
0.55	2017-03-03	10-K	2016	FY	2015-01-01	2015-12-31	CY2015
0.56	2016-02-26	10-K	2015	FY	2015-01-01	2015-12-31
0.57	2017-03-03	10-K	2016	FY	2016-01-01	2016-12-31	CY2016
0.56	2020-02-28	10-K	2019	FY	2017-01-01	2017-12-31	CY2017
0.56	2019-03-01	10-K	2018	FY	2017-01-01	2017-12-31
0.54	2020-02-28	10-K	2019	FY	2018-01-01	2018-12-31	CY2018
0.54	2019-03-01	10-K	2018	FY	2018-01-01	2018-12-31
0.59	2020-02-28	10-K	2019	FY	2019-01-01	2019-12-31	CY2019