| （単位：ドル） | 減価償却費 | 前年比（％） |
|---|---|---|
| 2025/12 | 925,000 | +6.0% |
| 2024/12 | 873,000 | -5.6% |
| 2023/12 | 925,000 | +13.6% |
| 2022/12 | 814,000 | -0.4% |
| 2021/12 | 817,000 | +12.1% |
| 2020/12 | 729,000 | +21.1% |
| 2019/12 | 602,000 | +14.7% |
| 2018/12 | 525,000 | -8.1% |
| 2017/12 | 571,000 | +5.0% |
| 2016/12 | 544,000 | -22.6% |
| 2015/12 | 703,000 | -2.5% |
| 2014/12 | 721,000 | -0.1% |
| 2013/12 | 722,000 | -5.5% |
| 2012/12 | 764,000 | -6.6% |
| 2011/12 | 818,000 | - |