| Stage | Population | Frequency (%) |
| T | ||
| - 1 | 2 | 1.9 |
| - 2 | 10 | 9.5 |
| - 3 | 87 | 82.9 |
| - 4 | 6 | 5.7 |
| - Total | 105 | 100.0 |
| N | ||
| - 0 | 53 | 50.5 |
| - 1 | 37 | 35.2. |
| - 2 | 15 | 14.3 |
| - Total | 105 | 100.0 |
| M | ||
| - 0 | 98 | 93.3 |
| - 1 | 7 | 6.7 |
| - Total | 105 | 100.0 |
| Pev | ||
| - 0 | 58 | 55.2 |
| - 1 | 31 | 29.5 |
| - 2 | 12 | 11.4 |
| - 3 | 4 | 3.9 |
| - Total | 105 | 100.0 |