EXHIBIT 99.1
JOINT FILING AGREEMENT
PURSUANT TO RULE 13d-1(k)
The undersigned acknowledge and agree that the foregoing statement on Schedule 13D is filed on behalf of each of the undersigned and that all subsequent amendments to this statement on Schedule 13D may be filed on behalf of each of the undersigned without the necessity of filing additional joint filing agreements. The undersigned acknowledge that each shall be responsible for the timely filing of such amendments, and for the completeness and accuracy of the information concerning him or it contained herein or therein, but shall not be responsible for the completeness and accuracy of the information concerning the others, except to the extent that he or it knows or has reason to believe that such information is inaccurate.
DATED: January 25, 2016
| | GREENLIGHT CAPITAL, INC. |
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| | By: | /s/ Daniel Roitman |
| | | Name: Daniel Roitman |
| | | Title: Chief Operating Officer |
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| | DME ADVISORS GP, LLC |
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| | By: | /s/ Daniel Roitman |
| | | Name: Daniel Roitman |
| | | Title: Chief Operating Officer |
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| | DME ADVISORS, LP |
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| | By: | /s/ Daniel Roitman |
| | | Name: Daniel Roitman |
| | | Title: Chief Operating Officer |
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| | DME CAPITAL MANAGEMENT, LP |
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| | By: | /s/ Daniel Roitman |
| | | Name: Daniel Roitman |
| | | Title: Chief Operating Officer |
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| | /s/ Daniel Roitman |
| | Daniel Roitman**, on behalf of David Einhorn |
