| （単位：千ドル） | 減価償却費 | 前年比（％） |
|---|---|---|
| 2024/12 | 15,545 | -17.5% |
| 2023/12 | 18,844 | -9.9% |
| 2022/12 | 20,915 | -7.5% |
| 2021/12 | 22,608 | -5.4% |
| 2020/12 | 23,893 | -8.4% |
| 2019/12 | 26,096 | -17.9% |
| 2018/12 | 31,799 | +7.8% |
| 2017/12 | 29,491 | -13.7% |
| 2016/12 | 34,162 | +21.6% |
| 2015/12 | 28,083 | +19.8% |
| 2014/12 | 23,451 | +8.9% |
| 2013/12 | 21,538 | -0.1% |
| 2012/12 | 21,570 | -2.4% |
| 2011/12 | 22,092 | - |