JOINT FILING AGREEMENT
In accordance with Rule 13d-1(k)(l) under the Securities Exchange Act of 1934,
as amended, the undersigned hereby agree to the joint filing of the attached
Schedule 13G, and any and all amendments thereto, and expressly authorize
Invesco Ltd., as the ultimate parent company of each of its undersigned
subsidiaries, to file such Schedule 13G, and any and all amendments thereto, on
behalf of each of them.
Dated: February 9, 2008 Invesco Ltd.
By: /s/ ▇▇▇▇ ▇▇▇▇▇▇▇▇
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Name: ▇▇▇▇ ▇▇▇▇▇▇▇▇
Title: Global Compliance Director
AIM Advisors, Inc.
By: /s/ ▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇
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Name: ▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇
Title: Chief Compliance Officer
AIM Capital Management, Inc.
By: /s/ ▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇
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Name: ▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇
Title: Chief Compliance Officer
AIM Funds Management, Inc.
By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇
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Name: ▇▇▇▇▇ ▇▇▇▇▇▇
Title: Vice President, Compliance & Chief
Compliance Officer
AIM Private Asset Management, Inc.
By: /s/ ▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇
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Name: ▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇
Title: Chief Compliance Officer
Invesco National Trust Company
By: /s/ ▇▇▇▇▇ ▇▇▇▇▇
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Name: ▇▇▇▇▇ ▇▇▇▇▇
Title: Assistant General Counsel
Atlantic Trust Company, N.A.
By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇
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Name: ▇▇▇▇▇ ▇▇▇▇▇▇
Title: General Counsel
Invesco Hong Kong Limited
By: /s/ ▇▇▇▇ ▇▇▇▇▇▇▇▇▇▇▇
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Name: ▇▇▇▇ ▇▇▇▇▇▇▇▇▇▇▇
Title: Reg. Head of Legal AP
Invesco Asset Management Deutschland GmbH
By: /s/ ▇▇▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇▇
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Name: ▇▇▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇▇
Title: Head of Legal CE
Invesco Asset Management Limited
By: /s/ ▇▇▇▇ ▇▇▇▇▇▇
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Name: ▇▇▇▇ ▇▇▇▇▇▇
Title: Director of European Compliance
Invesco Asset Management S.A.
By: /s/ ▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇
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Name: ▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇
Title: Chief Regional Officer
Invesco Asset Management Oesterreich GmbH
By: /s/ ▇▇▇▇▇▇ ▇▇▇▇▇
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Name: ▇▇▇▇▇▇ ▇▇▇▇▇
Title: Head of Sales
Invesco Global Asset Management (N.A.), Inc.
By: /s/ ▇▇▇▇▇▇▇ ▇▇▇▇▇
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Name: ▇▇▇▇▇▇▇ ▇▇▇▇▇
Title: Head of Legal WW Institutional
Invesco GT Management Company S.A.
By: /s/ ▇▇▇▇ ▇▇▇▇▇▇
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Name: ▇▇▇▇ ▇▇▇▇▇▇
Title: Director of European Compliance
Invesco Institutional (N.A.), Inc.
By: /s/ ▇▇▇▇▇▇▇ ▇▇▇▇▇
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Name: ▇▇▇▇▇▇▇ ▇▇▇▇▇
Title: Head of Legal WW Institutional
Invesco Management S.A.
By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇▇▇
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Name: ▇▇▇▇▇ ▇▇▇▇▇▇▇▇
Title: Head of Performance Measurement & Risk
Analysis
Invesco Maximum Income Management S.A.
By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇▇▇
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Name: ▇▇▇▇▇ ▇▇▇▇▇▇▇▇
Title: Head of Performance Measurement &
Risk Analysis
Invesco Private Capital, Inc.
By: /s/ ▇▇▇▇▇▇▇ ▇▇▇▇▇
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Name: ▇▇▇▇▇▇▇ ▇▇▇▇▇
Title: Head of Legal WW Institutional
Invesco Senior Secured Management, Inc.
By: /s/ ▇▇▇▇▇▇▇ ▇▇▇▇▇
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Name: ▇▇▇▇▇▇▇ ▇▇▇▇▇
Title: Head of Legal WW Institutional
Invesco Taiwan Limited
By: /s/ ▇▇▇▇ ▇▇▇▇▇▇▇▇▇▇▇
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Name: ▇▇▇▇ ▇▇▇▇▇▇▇▇▇▇▇
Title: Reg. Head of Legal, AP
Invesco Asset Management (Japan) Limited
By: /s/ ▇▇▇▇ ▇▇▇▇▇▇▇▇▇▇▇
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Name: ▇▇▇▇ ▇▇▇▇▇▇▇▇▇▇▇
Title: Reg. Head of Legal, AP
Invesco Asset Management Ireland Limited
By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇▇▇
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Name: ▇▇▇▇▇ ▇▇▇▇▇▇▇▇
Title: Head of Performance Measurement &
Risk Analysis
Invesco Kapitalanlagegesellschaft mbH
By: /s/ ▇▇▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇▇
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Name: ▇▇▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇▇
Title: Head of Legal CE
PowerShares Capital Management LLC
By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇
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Name: ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇
Title: General Counsel, COO & CCO
▇▇▇▇▇ ▇▇▇ Investment Counsel, Inc.
By: /s/ ▇▇▇▇ ▇▇▇▇▇▇▇▇
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Name: ▇▇▇▇ ▇▇▇▇▇▇▇▇
Title: General Counsel
