EX-99.1 2 h53615ckexv99w1.txt JOINT FILING AGREEMENT 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/ Lisa Brinkley ---------------------------------------------- Name: Lisa Brinkley Title: Global Compliance Director AIM Advisors, Inc. By: /s/ Todd L. Spillane ---------------------------------------------- Name: Todd L. Spillane Title: Chief Compliance Officer AIM Capital Management, Inc. By: /s/ Todd L. Spillane ---------------------------------------------- Name: Todd L. Spillane Title: Chief Compliance Officer AIM Funds Management, Inc. By: /s/ Wayne Bolton ---------------------------------------------- Name: Wayne Bolton Title: Vice President, Compliance & Chief Compliance Officer AIM Private Asset Management, Inc. By: /s/ Todd L. Spillane ---------------------------------------------- Name: Todd L. Spillane Title: Chief Compliance Officer Invesco National Trust Company By: /s/ Kevin Lyman ---------------------------------------------- Name: Kevin Lyman Title: Assistant General Counsel Atlantic Trust Company, N.A. By: /s/ Wayne Dewitt ---------------------------------------------- Name: Wayne DeWitt Title: General Counsel Invesco Hong Kong Limited By: /s/ Asha Balachandra ---------------------------------------------- Name: Asha Balachandra Title: Reg. Head of Legal AP Invesco Asset Management Deutschland GmbH By: /s/ Stephanie Ehrenfried ---------------------------------------------- Name: Stephanie Ehrenfried Title: Head of Legal CE Invesco Asset Management Limited By: /s/ Nick Styman ---------------------------------------------- Name: Nick Styman Title: Director of European Compliance Invesco Asset Management S.A. By: /s/ Patrick Riviere ---------------------------------------------- Name: Patrick Riviere Title: Chief Regional Officer Invesco Asset Management Oesterreich GmbH By: /s/ Thomas Kraus ---------------------------------------------- Name: Thomas Kraus Title: Head of Sales Invesco Global Asset Management (N.A.), Inc. By: /s/ Jeffrey Kupor ---------------------------------------------- Name: Jeffrey Kupor Title: Head of Legal WW Institutional Invesco GT Management Company S.A. By: /s/ Nick Styman ---------------------------------------------- Name: Nick Styman Title: Director of European Compliance Invesco Institutional (N.A.), Inc. By: /s/ Jeffrey Kupor ---------------------------------------------- Name: Jeffrey Kupor Title: Head of Legal WW Institutional Invesco Management S.A. By: /s/ Alain Gerbaldi ---------------------------------------------- Name: Alain Gerbaldi Title: Head of Performance Measurement & Risk Analysis Invesco Maximum Income Management S.A. By: /s/ Alain Gerbaldi ---------------------------------------------- Name: Alain Gerbaldi Title: Head of Performance Measurement & Risk Analysis Invesco Private Capital, Inc. By: /s/ Jeffrey Kupor ---------------------------------------------- Name: Jeffrey Kupor Title: Head of Legal WW Institutional Invesco Senior Secured Management, Inc. By: /s/ Jeffrey Kupor ---------------------------------------------- Name: Jeffrey Kupor Title: Head of Legal WW Institutional Invesco Taiwan Limited By: /s/ Asha Balachandra ---------------------------------------------- Name: Asha Balachandra Title: Reg. Head of Legal, AP Invesco Asset Management (Japan) Limited By: /s/ Asha Balachandra ---------------------------------------------- Name: Asha Balachandra Title: Reg. Head of Legal, AP Invesco Asset Management Ireland Limited By: /s/ Alain Gerbaldi ---------------------------------------------- Name: Alain Gerbaldi Title: Head of Performance Measurement & Risk Analysis Invesco Kapitalanlagegesellschaft mbH By: /s/ Stephanie Ehrenfried ---------------------------------------------- Name: Stephanie Ehrenfried Title: Head of Legal CE PowerShares Capital Management LLC By: /s/ Kevin Gustafson ---------------------------------------------- Name: Kevin Gustafson Title: General Counsel, COO & CCO Stein Roe Investment Counsel, Inc. By: /s/ Greg Campbell ---------------------------------------------- Name: Greg Campbell Title: General Counsel