| 従業員数 | 前年比（％） | |
|---|---|---|
| 4Q26 | 15,440 | +7.5% |
| 4Q25 | 14,359 | +8.5% |
| 4Q24 | 13,240 | +4.2% |
| 4Q23 | 12,704 | -1.5% |
| 4Q22 | 12,892 | -0.3% |
| 4Q21 | 12,935 | -0.4% |
| 4Q20 | 12,984 | +19.5% |
| 4Q19 | 10,867 | +6.9% |
| 4Q18 | 10,165 | +1.4% |
| 4Q17 | 10,021 | +0.6% |
| 4Q16 | 9,957 | +4.1% |
| 4Q15 | 9,563 | +0.1% |
| 4Q14 | 9,557 | -0.5% |
| 4Q13 | 9,602 | +2.0% |
| 4Q12 | 9,412 | +2.3% |
| 4Q11 | 9,202 | +0.9% |
| 4Q10 | 9,118 | - |