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