| （単位：千ドル） | 減価償却費 | 前年比（％） |
|---|---|---|
| 2024/12 | 15,779 | -14.3% |
| 2023/12 | 18,422 | -11.9% |
| 2022/12 | 20,918 | -8.0% |
| 2021/12 | 22,746 | +1.9% |
| 2020/12 | 22,317 | -1.9% |
| 2019/12 | 22,747 | +2.1% |
| 2018/12 | 22,275 | +31.5% |
| 2017/12 | 16,942 | +8.0% |
| 2016/12 | 15,689 | +7.7% |
| 2015/12 | 14,562 | -5.9% |
| 2014/12 | 15,468 | +1.8% |
| 2013/12 | 15,197 | -5.3% |
| 2012/12 | 16,049 | -5.4% |
| 2011/12 | 16,960 | - |