| 従業員数 | 前年比（％） | |
|---|---|---|
| 4Q26 | 10,850 | +2.8% |
| 4Q25 | 10,558 | +1.1% |
| 4Q24 | 10,442 | +1.2% |
| 4Q23 | 10,320 | +0.5% |
| 4Q22 | 10,264 | +1.1% |
| 4Q21 | 10,154 | +1.5% |
| 4Q20 | 10,003 | +1.9% |
| 4Q19 | 9,818 | +2.6% |
| 4Q18 | 9,571 | +3.5% |
| 4Q17 | 9,244 | +3.7% |
| 4Q16 | 8,915 | +0.9% |
| 4Q15 | 8,839 | +0.2% |
| 4Q14 | 8,821 | +1.0% |
| 4Q13 | 8,732 | -0.2% |
| 4Q12 | 8,746 | -0.3% |
| 4Q11 | 8,769 | +1.2% |
| 4Q10 | 8,665 | - |