| （単位：千ドル） | 減価償却費 | 前年比（％） |
|---|---|---|
| 2025/12 | 521,600 | +0.7% |
| 2024/12 | 518,100 | -2.9% |
| 2023/12 | 533,400 | -10.9% |
| 2022/12 | 598,800 | +2.8% |
| 2021/12 | 582,500 | +2.5% |
| 2020/12 | 568,400 | -4.9% |
| 2019/12 | 597,400 | -0.7% |
| 2018/12 | 601,400 | +7.6% |
| 2017/12 | 558,900 | +4.8% |
| 2016/12 | 533,500 | +133.1% |
| 2015/12 | 228,900 | +64.6% |
| 2014/12 | 139,100 | +2.8% |
| 2013/12 | 135,300 | +22.0% |
| 2012/12 | 110,900 | +11.7% |
| 2011/12 | 99,300 | +14.3% |
| 2010/12 | 86,900 | - |