| Stages | Frequency | Percentage |
|---|---|---|
| Unknown | 2 | 0.7 |
| IA2 | 1 | 0.4 |
| IB | 2 | 0.7 |
| IB1 | 1 | 0.4 |
| IB2 | 1 | 0.4 |
| IIA | 14 | 5.1 |
| IIB | 61 | 22.3 |
| IIB2 | 1 | 0.4 |
| IIIA | 32 | 11.7 |
| IIIB | 95 | 34.8 |
| IIIB1 | 16 | 5.9 |
| IIIB2 | 27 | 9.9 |
| IVA | 15 | 5.5 |
| IVB | 5 | 1.8 |
| Total unspecified | 2 | 0.7 |
| Total I | 5 | 1.8 |
| Total II | 76 | 27.8 |
| Total III | 170 | 62.2 |
| Total IV | 20 | 7.3 |