| 従業員数 | 前年比（％） | |
|---|---|---|
| 4Q25 | 15,547 | -2.6% |
| 4Q24 | 15,968 | -1.8% |
| 4Q23 | 16,259 | +1.1% |
| 4Q22 | 16,089 | -8.6% |
| 4Q21 | 17,611 | -11.4% |
| 4Q20 | 19,873 | +2.9% |
| 4Q19 | 19,313 | +4.6% |
| 2Q19 | 19,102 | +5.5% |
| 4Q18 | 18,460 | +6.5% |
| 2Q18 | 18,112 | +7.8% |
| 4Q17 | 17,340 | +0.6% |
| 2Q17 | 16,807 | +1.6% |
| 4Q16 | 17,244 | +15.2% |
| 2Q16 | 16,548 | - |
| 4Q15 | 14,965 | +22.5% |
| 4Q14 | 12,220 | +32.4% |
| 4Q13 | 9,230 | +48.7% |
| 4Q12 | 6,208 | - |