| （単位：千ドル） | 減価償却費 | 前年比（％） |
|---|---|---|
| 2025/12 | 38,916 | -1.1% |
| 2024/12 | 39,333 | -2.5% |
| 2023/12 | 40,774 | -12.0% |
| 2023/1 | 40,337 | -13.0% |
| 2022/1 | 46,345 | +0.9% |
| 2021/1 | 45,920 | - |
| 2019/12 | 44,932 | +15.0% |
| 2018/12 | 39,084 | +27.6% |
| 2017/12 | 30,261 | -1.8% |
| 2017/1 | 30,632 | -0.6% |
| 2016/1 | 30,803 | - |
| 2014/12 | 30,677 | +24.3% |
| 2013/12 | 24,670 | -2.0% |
| 2012/12 | 25,882 | - |
| 2012/1 | 25,179 | - |