| （単位：千ドル） | 減価償却費 | 前年比（％） |
|---|---|---|
| 2024/12 | 16,978 | -19.2% |
| 2023/12 | 21,009 | -21.9% |
| 2022/12 | 26,893 | -6.9% |
| 2021/12 | 28,901 | -3.0% |
| 2020/12 | 29,805 | -0.6% |
| 2019/12 | 29,999 | -4.3% |
| 2018/12 | 31,346 | -11.6% |
| 2017/12 | 35,440 | +3.3% |
| 2016/12 | 34,320 | +11.1% |
| 2015/12 | 30,889 | +19.1% |
| 2014/12 | 25,930 | +16.3% |
| 2013/12 | 22,302 | +19.3% |
| 2012/12 | 18,700 | -3.7% |
| 2011/12 | 19,425 | +11.6% |
| 2010/11 | 17,413 | - |