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Filing date	Form	Description	Filing Group	View
04/05/16	DEFA14A	Additional proxy soliciting materials - definitive	Proxy Filings	View HTML 0000745732-16-000043.pdf 0000745732-16-000043.rtf 0000745732-16-000043.xls
04/04/17	DEFA14A	Additional proxy soliciting materials - definitive	Proxy Filings	View HTML 0000745732-17-000014.pdf 0000745732-17-000014.rtf 0000745732-17-000014.xls
04/10/18	DEFA14A	Additional proxy soliciting materials - definitive	Proxy Filings	View HTML 0000745732-18-000009.pdf 0000745732-18-000009.rtf 0000745732-18-000009.xls
04/09/19	DEFA14A	Additional proxy soliciting materials - definitive	Proxy Filings	View HTML 0000745732-19-000013.pdf 0000745732-19-000013.rtf 0000745732-19-000013.xls
04/18/19	DEFA14A	Additional proxy soliciting materials - definitive	Proxy Filings	View HTML 0000745732-19-000017.pdf 0000745732-19-000017.rtf 0000745732-19-000017.xls
05/07/19	DEFA14A	Additional proxy soliciting materials - definitive	Proxy Filings	View HTML 0000745732-19-000019.pdf 0000745732-19-000019.rtf 0000745732-19-000019.xls
04/07/20	DEFA14A	Additional proxy soliciting materials - definitive	Proxy Filings	View HTML 0000745732-20-000041.pdf 0000745732-20-000041.rtf 0000745732-20-000041.xls
04/06/21	DEFA14A	Additional proxy soliciting materials - definitive	Proxy Filings	View HTML 0000745732-21-000024.pdf 0000745732-21-000024.rtf 0000745732-21-000024.xls
04/22/21	DEFA14A	Additional proxy soliciting materials - definitive	Proxy Filings	View HTML 0000745732-21-000028.pdf 0000745732-21-000028.rtf 0000745732-21-000028.xls
04/30/21	DEFA14A	Additional proxy soliciting materials - definitive	Proxy Filings	View HTML 0000745732-21-000031.pdf 0000745732-21-000031.rtf 0000745732-21-000031.xls

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