|                                            |   | Year                        |       |   | Year                        |   |       | Year                        |   |   | Year                        |   |   | Year                        |       |   | Year                        |   |
|------------------------------------------------------|--------|-----------------------------|------------|--------|-----------------------------|--------|------------|-----------------------------|--------|--------|-----------------------------|--------|--------|-----------------------------|------------|--------|-----------------------------|--------|
|                                                 |   | Ended                       |       |   | Ended                       |   |       | Ended                       |   |   | Ended                       |   |   | Ended                       |       |   | Ended                       |   |
|                                                 |   | December 31, 2010 |       |   | December 31, 2009 |   |       | December 31, 2008 |   |   | December 31, 2007 |   |   | December 31, 2006 |       |   | December 31, 2005 |   |
|                                                 |   |                        |       |   |                        |   |       |                        |   |   |                        |   |   |                        |       |   |                        |   |
| Net Income                                           |   | $                           | 15,627,834 |   |                        | $      | 17,994,036 |                        |   | $      | 16,282,037                  |   |   | $                           | 16,826,749 |   |                        | $      | 15,194,281 |   |   | $ | 14,053,083 |   |
| Add:                                                 |   |                        |       |   |                        |   |       |                        |   |   |                        |   |   |                        |       |   |                        |   |   |   |   |   |   |   |
| Interest on indebtedness                             |   |                        | 4,445,475  |   |                        |   | 4,346,519  |                        |   |   | 5,006,460                   |   |   |                        | 4,712,893  |   |                        |   | 4,486,743 |   |   |   | 4,007,754 |   |
| Amortization of financing costs                      |   |                        | 266,469    |   |                        |   | 288,235    |                        |   |   | 172,954                     |   |   |                        | 182,872    |   |                        |   | 138,028 |   |   |   | 151,133 |   |
|                                                 |   |                        |       |   |                        |   |       |                        |   |   |                        |   |   |                        |       |   |                        |   |   |   |   |   |   |   |
| Earnings                                             |   | $                           | 20,339,777 |   |                        | $      | 22,628,790 |                        |   | $      | 21,461,451                  |   |   | $                           | 21,722,514 |   |                        | $      | 19,819,052 |   |   | $ | 18,211,970 |   |
|                                                 |   |                        |       |   |                        |   |       |                        |   |   |                        |   |   |                        |       |   |                        |   |   |   |   |   |   |   |
| Fixed charges and preferred stock dividends:         |   |                        |       |   |                        |   |       |                        |   |   |                        |   |   |                        |       |   |                        |   |   |   |   |   |   |   |
| Interest on indebtedness                             |   | $                           | 4,764,709  |   |                        | $      | 4,567,301  |                        |   | $      | 5,564,105                   |   |   | $                           | 5,268,893  |   |                        | $      | 4,684,743 |   |   | $ | 4,444,754 |   |
| Amortization of financing costs                      |   |                        | 266,469    |   |                        |   | 288,235    |                        |   |   | 172,954                     |   |   |                        | 182,872    |   |                        |   | 138,028 |   |   |   | 151,133 |   |
|                                                 |   |                        |       |   |                        |   |       |                        |   |   |                        |   |   |                        |       |   |                        |   |   |   |   |   |   |   |
| Fixed charges                                        |   |                        | 5,031,178  |   |                        |   | 4,855,536  |                        |   |   | 5,737,059                   |   |   |                        | 5,451,765  |   |                        |   | 4,822,771 |   |   |   | 4,595,887 |   |
|                                                 |   |                        |       |   |                        |   |       |                        |   |   |                        |   |   |                        |       |   |                        |   |   |   |   |   |   |   |
| Add:                                                 |   |                        |       |   |                        |   |       |                        |   |   |                        |   |   |                        |       |   |                        |   |   |   |   |   |   |   |
| Preferred stock dividends                            |   |                        | -          |   |                        |   | -          |                        |   |   | -                           |   |   |                        | -          |   |                        |   | - |   |   |   | - |   |
|                                                 |   |                        |       |   |                        |   |       |                        |   |   |                        |   |   |                        |       |   |                        |   |   |   |   |   |   |   |
| Combined fixed charges and preferred stock dividends |   | $                           | 5,031,178  |   |                        | $      | 4,855,536  |                        |   | $      | 5,737,059                   |   |   | $                           | 5,451,765  |   |                        | $      | 4,822,771 |   |   | $ | 4,595,887 |   |
|                                                 |   |                        |       |   |                        |   |       |                        |   |   |                        |   |   |                        |       |   |                        |   |   |   |   |   |   |   |
| Ratio of earnings to fixed charges                   |   |                        | 4.04       | x      |                        |   | 4.66       | x                           |   |   | 3.74                        | x      |   |                        | 3.98       | x      |                        |   | 4.11 | x |   |   | 3.96 | x |

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