| （単位：千ドル） | 減価償却費 | 前年比（％） |
|---|---|---|
| 2023/12 | 31,666 | -3.5% |
| 2022/12 | 32,809 | -3.4% |
| 2021/12 | 33,953 | -17.8% |
| 2020/12 | 41,298 | +19.5% |
| 2019/12 | 34,573 | +201.2% |
| 2018/12 | 11,479 | -50.6% |
| 2017/12 | 23,234 | +7.7% |
| 2016/12 | 21,582 | +43.8% |
| 2015/12 | 15,012 | +77.2% |
| 2014/12 | 8,473 | +21.1% |
| 2013/12 | 6,999 | +50.1% |
| 2012/12 | 4,663 | +0.8% |
| 2011/12 | 4,625 | +17.1% |
| 2010/12 | 3,950 | - |