| （単位：ドル） | 減価償却費 | 前年比（％） |
|---|---|---|
| 2024/12 | 5,000 | -95.5% |
| 2023/12 | 112,000 | -42.9% |
| 2022/12 | 196,000 | -11.3% |
| 2021/12 | 221,000 | -24.3% |
| 2020/12 | 292,000 | +19.7% |
| 2019/12 | 244,000 | -35.8% |
| 2018/12 | 380,000 | -8.9% |
| 2017/12 | 417,000 | +10.6% |
| 2016/12 | 377,000 | +5.3% |
| 2015/12 | 358,000 | +1.4% |
| 2014/12 | 353,000 | +229.9% |
| 2013/12 | 107,000 | +529.4% |
| 2012/12 | 17,000 | -46.9% |
| 2011/12 | 32,000 | - |