EXHIBIT 1

AGREEMENT OF JOINT FILING

Energy Income Partners, LLC, James J. Murchie, Eva Pao, Saul Ballesteros and John K. Tysseland hereby agree that the Statement on Schedule 13G to which this agreement is attached as an exhibit as well as all future amendments to such Statement, shall be filed jointly on behalf of each of them. This agreement is intended to satisfy the requirements of Rule 13d-1(k)(1)(iii) under the Securities Exchange Act of 1934, as amended.

Dated: February 14, 2020 

By:	/s/ James J. Murchie
	Energy Income Partners, LLC Title:    Chief Executive Officer
By:	/s/ Eva Pao
	Name:   Eva Pao Title:     Partner
By:	/s/ Saul Ballesteros
	Name:   Saul Ballesteros Title:     Head Trader
By:	/s/ John K. Tysseland
	Name:   John K. Tysseland Title:     Portfolio Manager