| 従業員数 | 前年比（％） | |
|---|---|---|
| 4Q26 | 18,031 | +4.2% |
| 4Q25 | 17,305 | +1.9% |
| 4Q24 | 16,986 | +7.0% |
| 4Q23 | 15,876 | +2.6% |
| 4Q22 | 15,470 | +1.3% |
| 4Q21 | 15,267 | +1.8% |
| 4Q20 | 14,993 | +1.7% |
| 4Q19 | 14,739 | +2.6% |
| 4Q18 | 14,359 | +1.9% |
| 4Q17 | 14,094 | +3.0% |
| 4Q16 | 13,688 | +1.9% |
| 4Q15 | 13,432 | +4.5% |
| 4Q14 | 12,856 | +0.1% |
| 4Q13 | 12,838 | -0.2% |
| 4Q12 | 12,870 | -12.1% |
| 4Q11 | 14,639 | +1.1% |
| 4Q10 | 14,476 | - |