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XBRL Files The Company started filing XBRL files for the Second Quarter 2011. A XBRL browser is required to view these files. 1st Quarter 2012 XBRL Item - EX-101.INS - Instance XBRL Item - EX-101.SCH - Taxonomy Extension Schema XBRL Item - EX-101.CAL - Taxonomy Extension Calculation XBRL Item - EX-101.LAB - Taxonomy Extension Label XBRL Item - EX-101.LAB - Taxonomy Extension Presentation XBRL Item - EX-101.LAB - Taxonomy Extension Definition Annual Form 10-K 2011 XBRL Item - EX-101.INS - Instance XBRL Item - EX-101.SCH - Taxonomy Extension Schema XBRL Item - EX-101.CAL - Taxonomy Extension Calculation XBRL Item - EX-101.LAB - Taxonomy Extension Label XBRL Item - EX-101.LAB - Taxonomy Extension Presentation XBRL Item - EX-101.LAB - Taxonomy Extension Definition 3rd Quarter 2011 XBRL Item - EX-101.INS - Instance XBRL Item - EX-101.SCH - Taxonomy Extension Schema XBRL Item - EX-101.CAL - Taxonomy Extension Calculation XBRL Item - EX-101.LAB - Taxonomy Extension Label XBRL Item - EX-101.LAB - Taxonomy Extension Presentation XBRL Item - EX-101.LAB - Taxonomy Extension Definition 2nd Quarter 2011 XBRL Item - EX-101.INS - Instance XBRL Item - EX-101.SCH - Taxonomy Extension Schema XBRL Item - EX-101.CAL - Taxonomy Extension Calculation XBRL Item - EX-101.LAB - Taxonomy Extension Label XBRL Item - EX-101.LAB - Taxonomy Extension Presentation XBRL Item - EX-101.LAB - Taxonomy Extension Definition