Exhibit 12

RATIOS OF EARNINGS TO FIXED CHARGES AND TO

COMBINED FIXED CHARGES AND PREFERRED STOCK DIVIDENDS

December 31, 2011

|  | Years Ended December 31, |
|  | 2011 |  |  | 2010 |  |  | 2009 |  |  | 2008 |  |  | 2007 |
EARNINGS: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Adjusted (loss) earnings from continuing operations before income taxes |  | $ | 4,264 |  |  | $ | 3,548 |  |  | $ | (4,574 | ) |  | $ | (4,208 | ) |  | $ | 3,283 |
Add fixed charges (see below) |  |  | 439 |  |  |  | 460 |  |  |  | 467 |  |  |  | 459 |  |  |  | 550 |
Adjusted (loss) earnings |  | $ | 4,703 |  |  | $ | 4,008 |  |  | $ | (4,107 | ) |  | $ | (3,749 | ) |  | $ | 3,833 |
FIXED CHARGES AND PREFERRED STOCK DIVIDENDS: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross interest expense |  | $ | 425 |  |  | $ | 439 |  |  | $ | 444 |  |  | $ | 440 |  |  | $ | 532 |
Estimated interest component of operating lease payments |  |  | 14 |  |  |  | 21 |  |  |  | 23 |  |  |  | 19 |  |  |  | 18 |
Fixed charges |  |  | 439 |  |  |  | 460 |  |  |  | 467 |  |  |  | 459 |  |  |  | 550 |
Preferred stock requirements, pre-tax |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 9 |  |  |  | 15 |
Combined fixed charges and preferred stock dividends |  | $ | 439 |  |  | $ | 460 |  |  | $ | 467 |  |  | $ | 468 |  |  | $ | 565 |
Ratio of earnings to fixed charges |  |  | 10.71 |  |  |  | 8.71 |  |  |  | N/A |  |  |  | N/A |  |  |  | 6.97 |
Ratio of earnings to combined fixed charges and preferred stock dividends |  |  | 10.71 |  |  |  | 8.71 |  |  |  | N/A |  |  |  | N/A |  |  |  | 6.78 |
Insufficiency of earnings to cover fixed charges |  |  | N/A |  |  |  | N/A |  |  | $ | 4,574 |  |  | $ | 4,208 |  |  |  | N/A |
Insufficiency of earnings to cover combined fixed charges and preferred stock dividends |  |  | N/A |  |  |  | N/A |  |  | $ | 4,574 |  |  | $ | 4,217 |  |  |  | N/A |

N/A | Not applicable.