| （単位：千ドル） | 減価償却費 | 前年比（％） |
|---|---|---|
| 2024/12 | 14,857 | +3.3% |
| 2023/12 | 14,385 | -3.2% |
| 2022/12 | 14,862 | -3.8% |
| 2021/12 | 15,446 | -4.4% |
| 2020/12 | 16,161 | -18.6% |
| 2019/12 | 19,846 | -26.6% |
| 2018/12 | 27,039 | +14.0% |
| 2017/12 | 23,720 | +7.0% |
| 2016/12 | 22,178 | +3.3% |
| 2015/12 | 21,472 | +1.2% |
| 2014/12 | 21,218 | -1.3% |
| 2013/12 | 21,501 | -3.6% |
| 2012/12 | 22,304 | -20.3% |
| 2011/12 | 27,979 | - |