Securities and Exchange Commission

Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum

The minimum risk-free interest rate assumption that is used in valuing an option on its own shares.

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Annual (pure)

Value	Reported On	Form	FY	FP	Start Date	End Date	Fiscal Period
0.0021	2013-07-26	8-K	2013	Q2	2011-12-01	2012-11-30	CY2012
0.0014	2014-02-07	10-K	2013	FY	2012-12-01	2013-11-30	CY2013
0.0017	2015-01-30	10-K	2014	FY	2013-12-01	2014-11-30	CY2014
0.0021	2016-02-16	10-K	2015	FY	2014-12-01	2015-11-30	CY2015
0.0066	2017-03-01	10-K	2016	FY	2016-01-01	2016-12-31	CY2016
0.0166	2018-03-13	10-K/A	2017	FY	2017-01-01	2017-12-31	CY2017
0.0241	2019-02-19	10-K	2018	FY	2018-01-01	2018-12-31	CY2018

All Reported Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum (pure)

Value	Reported On	Form	FY	FP	Start Date	End Date	Fiscal Period
0.0021	2013-02-12	10-K	2012	FY	2011-12-01	2012-11-30
0.0021	2013-07-26	8-K	2013	Q2	2011-12-01	2012-11-30	CY2012
0.0014	2014-02-07	10-K	2013	FY	2012-12-01	2013-11-30	CY2013
0.0017	2015-01-30	10-K	2014	FY	2013-12-01	2014-11-30	CY2014
0.0021	2016-02-16	10-K	2015	FY	2014-12-01	2015-11-30	CY2015
0.0066	2017-03-01	10-K	2016	FY	2016-01-01	2016-12-31	CY2016
0.0166	2018-02-21	10-K	2017	FY	2017-01-01	2017-12-31
0.0166	2018-03-13	10-K/A	2017	FY	2017-01-01	2017-12-31	CY2017
0.0241	2019-02-19	10-K	2018	FY	2018-01-01	2018-12-31	CY2018