| （単位：千ドル） | 減価償却費 | 前年比（％） |
|---|---|---|
| 2025/12 | 311,000 | -3.7% |
| 2024/12 | 323,000 | -3.3% |
| 2023/12 | 334,000 | +12.8% |
| 2022/12 | 296,000 | -8.9% |
| 2021/12 | 325,000 | -9.0% |
| 2020/12 | 357,000 | -20.0% |
| 2019/12 | 446,000 | +2.8% |
| 2018/12 | 433,900 | -31.7% |
| 2017/12 | 635,600 | +45.4% |
| 2016/12 | 437,200 | +154.8% |
| 2015/12 | 171,600 | +9.9% |
| 2014/12 | 156,100 | -1.8% |
| 2013/12 | 158,900 | -2.9% |
| 2012/12 | 163,700 | +1.3% |
| 2011/12 | 161,600 | - |