| （単位：千ドル） | 減価償却費 | 前年比（％） |
|---|---|---|
| 2023/12 | 427,000 | +2.2% |
| 2022/12 | 418,000 | +0.7% |
| 2021/12 | 415,000 | +15.9% |
| 2020/12 | 358,000 | -11.6% |
| 2019/12 | 405,000 | +84.1% |
| 2018/12 | 220,000 | -8.3% |
| 2017/12 | 240,000 | +4.8% |
| 2016/12 | 229,000 | -7.3% |
| 2015/12 | 247,000 | -11.2% |
| 2014/12 | 278,000 | -4.5% |
| 2013/12 | 291,000 | -1.4% |
| 2012/12 | 295,000 | -1.3% |
| 2011/12 | 299,000 | -3.5% |
| 2010/12 | 310,000 | - |