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Exhibit 1
JOINT FILING AGREEMENT
     The undersigned, Temasek Holdings (Private) Limited, Fullerton Management Pte Ltd, Fullerton Financial Holdings Pte. Ltd. and Allamanda Investments Pte Ltd, hereby agree and acknowledge that the information required by this Schedule 13G/A, to which this Agreement is attached as an exhibit, is filed on behalf of each of them. The undersigned further agree that any further amendments or supplements hereto shall also be filed on behalf of each of them.
         
Dated: February 10, 2011  TEMASEK HOLDINGS (PRIVATE) LIMITED
 
 
  By:   /s/ Lena Chia Yue Joo    
    Name  : Lena Chia Yue Joo   
    Title  : Managing Director, Legal & Regulations   
 
 
Dated: February 10, 2011  FULLERTON MANAGEMENT PTE LTD
 
 
  By:   /s/ Lena Chia Yue Joo    
    Name  : Lena Chia Yue Joo    
    Title  : Director   
 
 
Dated: February 10, 2011  FULLERTON FINANCIAL HOLDINGS PTE. LTD.
 
 
  By:   /s/ Syed Aamir Zahidi    
    Name  : Syed Aamir Zahidi   
    Title  : Executive Vice President   
 
 
Dated: February 10, 2011  ALLAMANDA INVESTMENTS PTE LTD
 
 
  By:   /s/ Rooksana Shahabally    
    Name  : Rooksana Shahabally   
    Title  : Director