| （単位：千ドル） | 減価償却費 | 前年比（％） |
|---|---|---|
| 2024/12 | 3,514 | -4.2% |
| 2023/12 | 3,668 | -78.8% |
| 2022/12 | 17,319 | -29.7% |
| 2021/12 | 24,643 | -3.9% |
| 2020/12 | 25,639 | +43.5% |
| 2019/12 | 17,861 | -1.9% |
| 2018/12 | 18,204 | +0.3% |
| 2017/12 | 18,142 | -5.4% |
| 2016/12 | 19,169 | +3.6% |
| 2015/12 | 18,503 | +40.5% |
| 2014/12 | 13,174 | -18.2% |
| 2013/12 | 16,110 | -14.1% |
| 2012/12 | 18,765 | +9.1% |
| 2011/12 | 17,194 | - |