| （単位：ドル） | 減価償却費 | 前年比（％） |
|---|---|---|
| 2024/12 | 599,000 | -13.4% |
| 2023/12 | 692,000 | -22.2% |
| 2022/12 | 890,000 | -1.4% |
| 2021/12 | 903,000 | +1.8% |
| 2020/12 | 887,000 | +17.6% |
| 2019/12 | 754,000 | +12.7% |
| 2018/12 | 669,000 | -3.9% |
| 2017/12 | 696,000 | -5.2% |
| 2016/12 | 734,000 | -9.6% |
| 2015/12 | 812,000 | +11.1% |
| 2014/12 | 731,000 | -1.1% |
| 2013/12 | 739,000 | -0.4% |
| 2012/12 | 742,000 | -1.5% |
| 2011/12 | 753,000 | - |