| Per | No | Item |
| 5.94% | 24 | Less than 5 years |
| 35.15% | 142 | Over 5 and less than 15 years |
| 43.07% | 174 | Over 15 and less than 25 years |
| 15.84% | 64 | More than 25 years |
| 100% | 404 |
|