| Exhibit Number | | Exhibit Title | | Incorporated by Reference to: | | Date Filed |
| 3.1* | | Articles of Amendment and Restatement of the Company, dated May 21, 1997 | | Form 10-Q | | August 14, 1997 |
| 3.2* | | Certificate of Correction of the Company, dated June 20, 1997 | | Form 10-Q | | August 14, 1997 |
| 3.3* | | Articles of Amendment of the Company, effective as of May 10, 2017 | | Form 8-K | | May 12, 2017 |
| 3.4* | | Articles of Amendment of the Company, effective as of May 18, 2022 | | Form 8-K | | May 19, 2022 |
| 3.5* | | Articles Supplementary, dated June 9, 1999, relating to the 9.50% Series A Cumulative Redeemable Preferred Stock | | Form 10-Q | | August 13, 1999 |
| 3.6* | | Articles Supplementary, dated February 10, 2000, relating to the election to be subject to Subtitle 8 of Title 3 of the Maryland General Corporation Law | | Form 8-K | | February 10, 2000 |
| 3.7* | | Articles Supplementary, dated February 10, 2000, relating to the Series A Junior Participating Preferred Stock | | Form 8-K | | February 10, 2000 |
| 3.8* | | Articles Supplementary, dated January 18, 2002, relating to the 9.10% Series B Cumulative Redeemable Preferred Stock | | Form 8-A | | January 18, 2002 |
| 3.9* | | Articles Supplementary, dated June 22, 2004, relating to the 8.375% Series C Cumulative Redeemable Preferred Stock | | Form 8-A | | June 28, 2004 |
| 3.10* | | Articles Supplementary, dated March 25, 2008, relating to the 7.00% Series D Cumulative Convertible Preferred Stock | | Form 8-K | | March 25, 2008 |
| 3.11* | | Articles Supplementary, dated March 12, 2012, relating to the 6.45% Series E Cumulative Redeemable Preferred Stock | | Form 8-K | | March 14, 2012 |
| 3.12* | | Articles Supplementary, effective as of May 10, 2017, relating to Reclassified Preferred Stock | | Form 8-K | | May 12, 2017 |
| 3.13* | | Amended and Restated Bylaws of the Company (Amended December 6, 2024) | | Form 8-K | | December 9, 2024 |
| 10.1* | | Amended and Restated 1997 Stock Award and Incentive Plan of the Company | | Form 8-K | | May 15, 2025 |
| 22.1 | | List of Guarantor Subsidiaries of the Company | | N/A | | Filed herewith |
| 31.1 | | Certification of Principal Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 | | N/A | | Filed herewith |
| 31.2 | | Certification of Principal Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 | | N/A | | Filed herewith |
| 31.3 | | Certification of Principal Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 | | N/A | | Filed herewith |
| 32.0 | | Certification of Principal Executive Officers and Principal Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 | | N/A | | Filed herewith |
| 99.1 | | Updates to Federal Income Tax Considerations | | N/A | | Filed herewith |
| 101.1 | | The following materials from the Company’s quarterly report on Form 10-Q for the quarterly period ended June 30, 2025, formatted in iXBRL (Inline eXtensible Business Reporting Language): (i) Consolidated Balance Sheets as of June 30, 2025 and December 31, 2024 (unaudited), (ii) Consolidated Statements of Operations for the three and six months ended June 30, 2025 and 2024 (unaudited), (iii) Consolidated Statements of Comprehensive Income for the three and six months ended June 30, 2025 and 2024 (unaudited), (iv) Consolidated Statements of Changes in Stockholders’ Equity and Noncontrolling Interests for the three and six months ended June 30, 2025 and 2024 (unaudited), (v) Consolidated Statements of Cash Flows for the six months ended June 30, 2025 and 2024 (unaudited), and (vi) Notes to Consolidated Financial Statements (unaudited) | | N/A | | Filed herewith |
| 104 | | Cover Page Interactive Data File – the cover page from this Quarterly Report on Form 10-Q for the quarter ended June 30, 2025 is formatted in Inline XBRL and contained in Exhibit 101.1 | | N/A | | Filed herewith |
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