| （単位：千ドル） | 減価償却費 | 前年比（％） |
|---|---|---|
| 2025/12 | 13,650 | +1.7% |
| 2024/12 | 13,427 | +6.7% |
| 2023/12 | 12,578 | -1.4% |
| 2022/12 | 12,762 | -2.3% |
| 2021/12 | 13,061 | +2.1% |
| 2020/12 | 12,793 | +9.7% |
| 2019/12 | 11,665 | -7.0% |
| 2018/12 | 12,549 | -2.8% |
| 2017/12 | 12,916 | +11.6% |
| 2016/12 | 11,573 | +3.8% |
| 2015/12 | 11,145 | +20.3% |
| 2014/12 | 9,262 | +7.2% |
| 2013/12 | 8,638 | +9.1% |
| 2012/12 | 7,920 | +7.7% |
| 2011/12 | 7,352 | +3.5% |
| 2010/12 | 7,102 | - |