| （単位：千ドル） | 減価償却費 | 前年比（％） |
|---|---|---|
| 2025/12 | 34,082 | -6.1% |
| 2024/12 | 36,295 | -4.2% |
| 2023/12 | 37,872 | +0.7% |
| 2022/12 | 37,595 | -9.4% |
| 2021/12 | 41,518 | -9.6% |
| 2020/12 | 45,908 | -6.4% |
| 2019/12 | 49,059 | -24.4% |
| 2018/12 | 64,862 | +24.4% |
| 2017/12 | 52,143 | +7.1% |
| 2016/12 | 48,673 | +113.6% |
| 2015/5 | 22,787 | +6.1% |
| 2014/5 | 21,468 | +9.2% |
| 2013/5 | 19,664 | +12.6% |
| 2012/5 | 17,469 | - |