| （単位：ドル） | 減価償却費 | 前年比（％） |
|---|---|---|
| 2024/12 | 562,000 | -2.8% |
| 2023/12 | 578,000 | -23.9% |
| 2022/12 | 760,000 | +10.6% |
| 2021/12 | 687,000 | +22.5% |
| 2020/12 | 561,000 | +27.2% |
| 2019/12 | 441,000 | -0.5% |
| 2018/12 | 443,000 | -14.5% |
| 2017/12 | 518,000 | -16.7% |
| 2016/12 | 622,000 | -2.8% |
| 2015/12 | 640,000 | +18.3% |
| 2014/12 | 541,000 | +18.1% |
| 2013/12 | 458,000 | +1.1% |
| 2012/12 | 453,000 | -4.6% |
| 2011/12 | 475,000 | - |