| 従業員数 | 前年比（％） | |
|---|---|---|
| 4Q26 | 22,278 | +4.7% |
| 4Q25 | 21,286 | +3.8% |
| 4Q24 | 20,515 | +3.3% |
| 4Q23 | 19,869 | +1.1% |
| 4Q22 | 19,661 | +18.5% |
| 4Q21 | 16,586 | +1.8% |
| 4Q20 | 16,297 | +0.7% |
| 4Q19 | 16,184 | +1.0% |
| 4Q18 | 16,024 | +0.6% |
| 4Q17 | 15,925 | +1.8% |
| 4Q16 | 15,640 | +0.3% |
| 4Q15 | 15,587 | +0.4% |
| 4Q14 | 15,518 | -0.6% |
| 4Q13 | 15,616 | +3.0% |
| 4Q12 | 15,168 | +2.4% |
| 4Q11 | 14,819 | +0.3% |
| 4Q10 | 14,780 | - |