Annuals and Proxies Form 10-Ks Filing date View Mar 30, 2007 View HTML 0001193125-07-070775.pdf 0001193125-07-070775.rtf 0001193125-07-070775.xls Mar 17, 2008 View HTML 0001193125-08-058929.pdf 0001193125-08-058929.rtf 0001193125-08-058929.xls Mar 16, 2009 View HTML 0001193125-09-055465.pdf 0001193125-09-055465.rtf 0001193125-09-055465.xls Mar 16, 2010 View HTML 0001193125-10-058425.pdf 0001193125-10-058425.rtf 0001193125-10-058425.xls Mar 16, 2011 View HTML 0001193125-11-068676.pdf 0001193125-11-068676.rtf 0001193125-11-068676.xls Mar 6, 2012 View HTML 0001193125-12-099147.pdf 0001193125-12-099147.rtf 0001193125-12-099147.xls EX-101.INS - XBRL INSTANCE DOCUMENT Mar 7, 2013 View HTML 0001193125-13-096263.pdf 0001193125-13-096263.rtf 0001193125-13-096263.xls EX-101.INS - XBRL INSTANCE DOCUMENT Mar 3, 2014 View HTML 0001193125-14-080551.pdf 0001193125-14-080551.rtf 0001193125-14-080551.xls EX-101.INS - XBRL INSTANCE DOCUMENT Feb 27, 2015 View HTML 0001193125-15-069666.pdf 0001193125-15-069666.rtf 0001193125-15-069666.xls EX-101.INS - XBRL INSTANCE DOCUMENT Feb 26, 2016 View HTML 0001628280-16-011841.pdf 0001628280-16-011841.rtf 0001628280-16-011841.xls EX-101.INS - XBRL INSTANCE DOCUMENT Mar 15, 2017 View HTML 0001297989-17-000002.pdf 0001297989-17-000002.rtf 0001297989-17-000002.xls EX-101.INS - XBRL INSTANCE DOCUMENT Feb 27, 2018 View HTML 0001297989-18-000002.pdf 0001297989-18-000002.rtf 0001297989-18-000002.xls EX-101.INS - XBRL INSTANCE DOCUMENT Proxy statements Filing date Form View Apr 25, 2007 DEF 14A View HTML 0001193125-07-089110.pdf 0001193125-07-089110.rtf 0001193125-07-089110.xls Apr 29, 2008 DEF 14A View HTML 0001193125-08-095336.pdf 0001193125-08-095336.rtf 0001193125-08-095336.xls Dec 29, 2008 DEF 14A View HTML 0001193125-08-260363.pdf 0001193125-08-260363.rtf 0001193125-08-260363.xls Apr 30, 2009 DEF 14A View HTML 0001193125-09-094489.pdf 0001193125-09-094489.rtf 0001193125-09-094489.xls Apr 30, 2010 DEF 14A View HTML 0001193125-10-102174.pdf 0001193125-10-102174.rtf 0001193125-10-102174.xls May 2, 2011 DEF 14A View HTML 0001193125-11-121938.pdf 0001193125-11-121938.rtf 0001193125-11-121938.xls Apr 30, 2012 DEF 14A View HTML 0001193125-12-196424.pdf 0001193125-12-196424.rtf 0001193125-12-196424.xls Apr 29, 2013 DEF 14A View HTML 0001193125-13-182516.pdf 0001193125-13-182516.rtf 0001193125-13-182516.xls Apr 30, 2014 DEF 14A View HTML 0001193125-14-172888.pdf 0001193125-14-172888.rtf 0001193125-14-172888.xls Apr 30, 2015 DEFA14A View HTML 0001626129-15-000116.pdf 0001626129-15-000116.rtf 0001626129-15-000116.xls Apr 30, 2015 DEF 14A View HTML 0001626129-15-000115.pdf 0001626129-15-000115.rtf 0001626129-15-000115.xls Apr 29, 2016 DEFA14A View HTML 0001626129-16-000599.pdf 0001626129-16-000599.rtf 0001626129-16-000599.xls Apr 29, 2016 DEF 14A View HTML 0001626129-16-000598.pdf 0001626129-16-000598.rtf 0001626129-16-000598.xls