| 従業員数 | 前年比（％） | |
|---|---|---|
| 4Q26 | 17,591 | -4.7% |
| 4Q25 | 18,452 | +0.7% |
| 4Q24 | 18,323 | -1.4% |
| 4Q23 | 18,576 | -21.7% |
| 4Q22 | 23,711 | -12.7% |
| 4Q21 | 27,162 | -5.0% |
| 4Q20 | 28,601 | +0.6% |
| 4Q19 | 28,426 | +5.4% |
| 4Q18 | 26,959 | +8.4% |
| 4Q17 | 24,859 | +0.9% |
| 4Q16 | 24,636 | +5.2% |
| 4Q15 | 23,413 | +1.3% |
| 4Q14 | 23,112 | +4.2% |
| 4Q13 | 22,181 | +0.8% |
| 4Q12 | 22,015 | +1.2% |
| 4Q11 | 21,762 | +0.6% |
| 4Q10 | 21,641 | - |