| （単位：千ドル） | 減価償却費 | 前年比（％） |
|---|---|---|
| 2025/6 | 10,012 | -9.2% |
| 2024/6 | 11,023 | -19.5% |
| 2023/6 | 13,694 | -10.2% |
| 2022/6 | 15,254 | -14.6% |
| 2021/6 | 17,858 | -6.6% |
| 2020/6 | 19,124 | +4.9% |
| 2019/6 | 18,224 | -10.4% |
| 2018/6 | 20,347 | -5.8% |
| 2017/6 | 21,602 | +0.8% |
| 2016/6 | 21,441 | -8.7% |
| 2015/6 | 23,480 | +26.8% |
| 2014/6 | 18,518 | +44.9% |
| 2013/6 | 12,782 | +11.3% |
| 2012/6 | 11,485 | - |