EXHIBIT 1
JOINT FILING AGREEMENT
     We, the signatories of this Statement on Schedule 13G/A to which this Agreement is attached, hereby agree that such Statement is, and any amendments thereto filed by either of us will be, filed on behalf of each of us.
         
  Temasek Holdings (Private) Limited
 
 
    /s/ Simon Israel   
  Name:   Simon Israel   
  Title:   Executive Director   
  Date:   September 30, 2008   
 
  Fullerton Management Pte Ltd
 
 
    /s/ Mark Lee Vi Loong   
  Name:   Mark Lee Vi Loong   
  Title:   Director   
  Date:   September 30, 2008   
 
  Centaura Investments (Mauritius) Pte Ltd
 
 
    /s/ Jeffrey Chua Siang Hwee   
  Name:   Jeffrey Chua Siang Hwee   
  Title:   Director   
  Date:   September 30, 2008   
 
  Cairnhill Investments (Mauritius) Pte Ltd
 
 
    /s/ Mark Lee Vi Loong   
  Name:   Mark Lee Vi Loong   
  Title:   Director   
  Date:   September 30, 2008   
 
  Charlton Investments (Mauritius) Pte Ltd
 
 
    /s/ Mark Lee Vi Loong   
  Name:   Mark Lee Vi Loong   
  Title:   Director   
  Date:   September 30, 2008   
 
  Crescent Investments (Mauritius) Pte Ltd
 
 
    /s/ Mark Lee Vi Loong   
  Name:   Mark Lee Vi Loong   
  Title:   Director   
  Date:   September 30, 2008   
 
  Clover Investments (Mauritius) Pte Ltd
 
 
    /s/ Goh Yong Siang   
  Name:   Goh Yong Siang   
  Title:   Director   
  Date:   September 30, 2008