退職給付に係る資産、坑井（純額）、Provision Of Reserve For Special Depreciation
- 【期間】
| 年度 | 退職給付に係る資産 | 坑井（純額） | Provision Of Reserve For Special Depreciation |
|---|
| 2008/03 | - | | 188億 | | - | |
| 2009/03 | - | | 181億 | -3.4% | - | |
| 2010/03 | - | | 193億 | +6.6% | - | |
| 2011/03 | - | | 136億 | -29.7% | - | |
| 2012/03 | - | | 95.7億 | -29.6% | - | |
| 2013/03 | - | | 51.3億 | -46.4% | - | |
| 2014/03 | - | | 116億 | +126.4% | - | |
| 2015/03 | 4.62億 | | 307億 | +164.6% | - | |
| 2016/03 | 8.88億 | +92.2% | 340億 | +10.8% | - | |
| 2017/03 | 9.54億 | +7.4% | 358億 | +5% | - | |
| 2018/03 | 14.5億 | +52.1% | 338億 | -5.6% | - | |
| 2019/03 | 13.2億 | -9.1% | 301億 | -10.9% | - | |
| 2020/03 | 9.71億 | -26.4% | 270億 | -10.3% | - | |
| 2021/03 | 23.8億 | +145.5% | 250億 | -7.5% | - | |
| 2022/03 | 23.2億 | -2.7% | 19.3億 | -92.3% | - | |
| 2023/03 | 17億 | -26.6% | 166億 | +763.9% | - | |
| 2024/03 | 33.6億 | +97.5% | 708億 | +325.9% | - | |
