| （単位：千ドル） | 減価償却費 | 前年比（％） |
|---|---|---|
| 2025/5 | 539,000 | -2.5% |
| 2024/5 | 552,700 | +1.1% |
| 2023/5 | 546,600 | -4.2% |
| 2022/5 | 570,300 | -5.2% |
| 2021/5 | 601,300 | +1.1% |
| 2020/5 | 594,700 | -4.1% |
| 2019/5 | 620,100 | +0.2% |
| 2018/5 | 618,800 | +2.5% |
| 2017/5 | 603,600 | -0.7% |
| 2016/5 | 608,100 | +3.4% |
| 2015/5 | 588,300 | +0.5% |
| 2014/5 | 585,400 | -0.4% |
| 2013/5 | 588,000 | +8.6% |
| 2012/5 | 541,500 | +14.6% |
| 2011/5 | 472,600 | - |