| （単位：千ドル） | 減価償却費 | 前年比（％） |
|---|---|---|
| 2024/12 | 17,384 | -1.4% |
| 2023/12 | 17,630 | -3.0% |
| 2022/12 | 18,181 | -1.7% |
| 2021/12 | 18,495 | 0.0% |
| 2020/12 | 18,493 | +19.2% |
| 2019/12 | 15,514 | +0.6% |
| 2018/12 | 15,418 | +0.5% |
| 2017/12 | 15,344 | -6.7% |
| 2016/12 | 16,451 | -7.1% |
| 2015/12 | 17,710 | -2.9% |
| 2014/12 | 18,247 | -11.3% |
| 2013/12 | 20,583 | +46.3% |
| 2012/12 | 14,067 | +11.9% |
| 2011/12 | 12,576 | - |