| （単位：千ドル） | 減価償却費 | 前年比（％） |
|---|---|---|
| 2023/12 | 686,000 | +2.1% |
| 2022/12 | 672,000 | -4.0% |
| 2021/12 | 700,000 | +4.8% |
| 2020/12 | 668,000 | -1.5% |
| 2019/12 | 678,000 | -3.4% |
| 2018/12 | 702,000 | -3.7% |
| 2017/12 | 729,000 | +60.9% |
| 2016/12 | 453,000 | +58.7% |
| 2015/12 | 285,500 | +1.6% |
| 2014/12 | 280,900 | -6.3% |
| 2013/12 | 299,900 | +6.0% |
| 2012/12 | 282,900 | -6.0% |
| 2011/12 | 301,100 | +13.4% |
| 2010/12 | 265,500 | - |