| （単位：千ドル） | 減価償却費 | 前年比（％） |
|---|---|---|
| 2025/6 | 25,284 | -8.6% |
| 2024/6 | 27,669 | +1.8% |
| 2023/7 | 27,186 | +3.7% |
| 2022/7 | 26,207 | +2.7% |
| 2021/6 | 25,528 | +7.9% |
| 2020/6 | 23,653 | +2.8% |
| 2019/6 | 23,003 | +1.9% |
| 2018/6 | 22,585 | +10.9% |
| 2017/6 | 20,368 | +16.2% |
| 2016/6 | 17,528 | -2.9% |
| 2015/6 | 18,043 | +0.8% |
| 2014/6 | 17,896 | -27.2% |
| 2013/6 | 24,584 | -9.4% |
| 2012/6 | 27,135 | - |