| （単位：ドル） | 減価償却費 | 前年比（％） |
|---|---|---|
| 2025/12 | 109,000 | -16.8% |
| 2024/12 | 131,000 | -20.1% |
| 2023/12 | 164,000 | -19.6% |
| 2022/12 | 204,000 | -31.8% |
| 2021/12 | 299,000 | -27.1% |
| 2020/12 | 410,000 | - |
| 2017/12 | 536,000 | +36.0% |
| 2016/12 | 394,000 | +49.8% |
| 2015/12 | 263,000 | +150.5% |
| 2014/12 | 105,000 | +59.1% |
| 2013/12 | 66,000 | +46.7% |
| 2012/12 | 45,000 | -84.9% |
| 2011/12 | 298,000 | - |