| （単位：千ドル） | 減価償却費 | 前年比（％） |
|---|---|---|
| 2025/12 | 6,680 | -3.3% |
| 2024/12 | 6,911 | -2.2% |
| 2023/12 | 7,063 | -7.0% |
| 2022/12 | 7,598 | -15.4% |
| 2021/12 | 8,986 | -7.6% |
| 2020/12 | 9,725 | +5.4% |
| 2019/12 | 9,230 | -1.3% |
| 2018/12 | 9,347 | +10.3% |
| 2017/12 | 8,472 | +13.0% |
| 2016/12 | 7,495 | +11.2% |
| 2015/12 | 6,742 | +6.0% |
| 2014/12 | 6,363 | +208.9% |
| 2013/12 | 2,060 | -79.1% |
| 2012/12 | 9,875 | +124.1% |
| 2011/12 | 4,406 | - |