INDEX TO EXHIBITS Exhibit Number Exhibit 3.1 Third Amended and Restated Certificate of Incorporation of the Registrant (incorporated by reference to Exhibit 3.1 to the Registrant’s Current Report on Form 8-K (file no. 1-11356) dated May 11, 2004 and filed on May 12, 2004) 3.2 Certificate of Amendment to the Amended and Restated Certificate of Incorporation of the Registrant (incorporated by reference to Exhibit 3.1 to the Registrant’s Current Report on Form 8-K (file no. 1-11356) dated May 22, 2008 and filed on May 29, 2008) 3.3 Second Amendment to the Amended and Restated Certificate of Incorporation of the Registrant (incorporated by reference to Exhibit 3.1 to the Registrant’s Current Report on Form 8-K (file no. 1-11356) dated May 12, 2010 and filed on May 18, 2010) 3.4 Certificate of Change of Registered Agent and Registered Office of the Registrant (incorporated by reference to Exhibit 3.1 to the Registrant’s Current Report on Form 8-K (file no. 1-11356) dated November 10, 2010 and filed on November 16, 2010) 3.5 Certificate of Designation of Series A Junior Participating Preferred Stock (incorporated by reference to Exhibit 3.1 to the Registrant’s Current Report on Form 8-K (file no. 1-11356) dated October 9, 2009 and filed on October 13, 2009) 3.6 Amended and Restated By-Laws of the Registrant (incorporated by reference to Exhibit 3.2 to the Registrant’s Current Report on Form 8-K (file no. 1-11356) dated November 9. 2011 and filed on November 15, 2011) 4.1 Specimen certificate for Common Stock (incorporated by reference to Exhibit 4.1 to the Registrant’s Annual Report on Form 10-K (file no. 1-11356) for the year ended December 31, 1999) 4.2 Amended and Restated Tax Benefit Preservation Plan, dated as of February 12, 2010, between the Registrant and The Bank of New York Mellon (incorporated by reference to Exhibit 4.1 to the Registrant’s Current Report on Form 8-K (file no. 1-11356) dated February 12, 2010 and filed on February 17, 2010) 4.3 First Amendment to the Amended and Restated Tax Benefit Preservation Plan, dated as of May 3, 2010, between the Registrant and The Bank of New York Mellon (incorporated by reference to Exhibit 4.1 to the Registrant’s Current Report on Form 8-K (file no. 1-11356) dated May 3, 2010 and filed on May 4, 2010) 4.4 Indenture dated as of February 14, 2003, between the Registrant and Wachovia Bank, National Association, as Trustee (incorporated by reference to Exhibit 4.1 to the Registrant’s Quarterly Report on Form 10-Q (file no. 1-11356) for the period ended March 31, 2003) 4.5 Form of 5.625% Senior Notes Due 2013 (included within Exhibit 4.4) 4.6 Senior Indenture, dated as of June 7, 2005, between the Registrant and Wells Fargo Bank, National Association, as Trustee (incorporated by reference to Exhibit 4.1 to the Registrant’s Current Report on Form 8-K (file no. 1-11356) dated June 2, 2005 and filed on June 7, 2005) 4.7 Officers’ Certificate, dated as of June 7, 2005, including the terms of the Registrant’s 5.375% Senior Notes due 2015, as Attachment A, and including the form of the Notes as Exhibit A-1 to Attachment A (incorporated by reference to Exhibit 4.2 to the Registrant’s Current Report on Form 8-K (file no. 1-11356) dated June 2, 2005 and filed on June 7, 2005) 4.8 Senior Indenture, dated as of November 15, 2010, between the Registrant and U.S. Bank National Association, as Trustee (incorporated by reference to Exhibit 4.1 to the Registrant’s Current Report on Form 8-K dated November 10, 2010 and filed on November 16, 2010) 272