| Variables | Years | Min | Max | Median | Mean | SD | N* |
| Total assets ($000,000,000) | 2006 | 1.262 | 1196.124 | 16.848 | 96.558 | 250.6 | 59 |
| 2007 | 1.296 | 1318.888 | 20.231 | 113 | 288 | 58 | |
| 2008 | 1.493 | 1746.242 | 22.911 | 132 | 333 | 58 | |
| 2009 | 1.347 | 1627.684 | 21.656 | 133 | 320.3 | 58 | |
| Net income ($000,000,000) | 2006 | 0.01 | 15.225 | 0.202 | 1.144 | 2.709 | 59 |
| 2007 | −1.481 | 11.631 | 0.158 | 0.869 | 2.22 | 58 | |
| 2008 | −6.215 | 10.419 | 0.119 | 0.326 | 2.07 | 58 | |
| 2009 | −3.13 | 8.422 | 0.086 | 0.334 | 1.939 | 58 | |
| Debt** (%) | 2006 | 81.9 | 94.17 | 90.39 | 89.926 | 3.195 | 59 |
| 2007 | 75.32 | 94.82 | 90.445 | 89.589 | 3.953 | 58 | |
| 2008 | 81.26 | 95.68 | 90.76 | 90.229 | 3.07 | 58 | |
| 2009 | 80.91 | 94.11 | 89.62 | 89.232 | 3.079 | 58 | |
| Market capitalization ($000,000,000) | 2006 | 607 | 273,598 | 6964 | 28,824 | 56,267 | 52 |
| 2007 | 420 | 183,107 | 5,180 | 22,414 | 40,536 | 54 | |
| 2008 | 59 | 124,660 | 2987 | 13,280 | 25,434 | 53 | |
| 2009 | 281 | 164,261 | 3222 | 19,199 | 36,972 | 53 |