SEC Filings

Form	Description	Filing date	View	Filer
SC 13G/A	An amendment to the SC 13G filing	Feb 13, 2003	View HTML 0000315066-03-001729.pdf	FMR LLC
SC 13G/A	An amendment to the SC 13G filing	Mar 10, 2003	View HTML 0000902219-03-001077.pdf	WELLINGTON MANAGEMENT GROUP LLP
SC 13G/A	An amendment to the SC 13G filing	Jan 12, 2004	View HTML 0000315066-04-000148.pdf	FMR LLC
SC 13G/A	An amendment to the SC 13G filing	Feb 12, 2004	View HTML 0000902219-04-000795.pdf	WELLINGTON MANAGEMENT GROUP LLP
SC 13G/A	An amendment to the SC 13G filing	Jul 12, 2004	View HTML 0000909567-04-000980.pdf	Invesco Canada Ltd
SC 13G/A	An amendment to the SC 13G filing	Feb 14, 2005	View HTML 0000315066-05-001315.pdf	FMR LLC
SC 13G/A	An amendment to the SC 13G filing	Aug 10, 2006	View HTML 0000950129-06-007804.pdf	Invesco Ltd.
SC 13G/A	An amendment to the SC 13G filing	Jan 19, 2007	View HTML 0000913414-07-000747.pdf	BLACKROCK INSTITUTIONAL TRUST COMPANY, N.A.
SC 13G/A	An amendment to the SC 13G filing	Feb 12, 2007	View HTML 0000017283-07-000601.pdf	CAPITAL RESEARCH & MANAGEMENT CO
SC 13G/A	An amendment to the SC 13G filing	Sep 10, 2007	View HTML 0000902219-07-001212.pdf 0000902219-07-001212.xls	WELLINGTON MANAGEMENT GROUP LLP

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