| （単位：ドル） | 減価償却費 | 前年比（％） |
|---|---|---|
| 2025/12 | 491,000 | -20.7% |
| 2024/12 | 619,000 | -13.7% |
| 2023/12 | 717,000 | +1.8% |
| 2022/12 | 704,000 | +4.1% |
| 2021/12 | 676,000 | - |
| 2019/12 | 931,000 | -5.9% |
| 2018/12 | 989,000 | +4.9% |
| 2017/12 | 943,000 | +18.9% |
| 2016/12 | 793,000 | +27.9% |
| 2015/12 | 620,000 | +11.7% |
| 2014/12 | 555,000 | +20.4% |
| 2013/12 | 461,000 | +17.0% |
| 2012/12 | 394,000 | - |