| （単位：千ドル） | 減価償却費 | 前年比（％） |
|---|---|---|
| 2024/12 | 17,585 | -6.2% |
| 2023/12 | 18,746 | -0.2% |
| 2022/12 | 18,780 | -34.3% |
| 2021/12 | 28,593 | +33.9% |
| 2020/12 | 21,348 | -0.2% |
| 2019/12 | 21,396 | -15.4% |
| 2018/12 | 25,295 | +2.4% |
| 2017/12 | 24,713 | +2.4% |
| 2016/12 | 24,137 | +4.5% |
| 2015/12 | 23,093 | -1.1% |
| 2014/12 | 23,352 | +16.6% |
| 2013/12 | 20,035 | +7.9% |
| 2012/12 | 18,566 | +8.7% |
| 2011/12 | 17,073 | - |