会計方針の変更を反映した当期首残高、退職給付制度改定関連損益（△は益）、経常費用
- 【期間】
| 年度 | 会計方針の変更を反映した当期首残高 | 退職給付制度改定関連損益（△は益） | 経常費用 |
|---|
| 2008/03 | - | | - | | 2.78兆 | |
| 2009/03 | - | | - | | 2.22兆 | -20% |
| 2010/03 | - | | - | | 1.19兆 | -46.5% |
| 2010/09 | - | | - | | 0.48兆 | -59.6% |
| 2011/03 | - | | - | | 1.02兆 | +111.4% |
| 2011/09 | - | | - | | 0.53兆 | -48.1% |
| 2012/03 | - | | - | | 1兆 | +89.4% |
| 2012/09 | - | | - | | 0.6兆 | -39.5% |
| 2013/03 | - | | - | | 1.19兆 | +96.9% |
| 2013/09 | - | | - | | 0.53兆 | -55.4% |
| 2014/03 | 7.9兆 | | - | | 1.26兆 | +136.8% |
| 2014/09 | - | | - | | 0.73兆 | -41.6% |
| 2015/03 | 9.16兆 | +15.9% | - | | 1.64兆 | +124.2% |
| 2015/09 | - | | - | | 0.79兆 | -52.2% |
| 2016/03 | 8.77兆 | -4.2% | - | | 1.65兆 | +109.5% |
| 2016/09 | - | | - | | 0.87兆 | -47.4% |
| 2017/03 | - | | - | | 2兆 | +130.5% |
| 2017/09 | - | | - | | 1.06兆 | -47% |
| 2018/03 | - | | - | | 2.22兆 | +109.2% |
| 2018/09 | - | | - | | 1.24兆 | -44.1% |
| 2019/03 | - | | - | | 2.72兆 | +119.9% |
| 2019/09 | - | | - | | 1.31兆 | -52% |
| 2020/03 | 7.63兆 | -13% | - | | 2.76兆 | +111.5% |
| 2020/09 | - | | -436億 | | 1.05兆 | -62.1% |
| 2021/03 | 8.16兆 | +7% | -436億 | ±0% | 2.11兆 | +101.5% |
| 2021/09 | - | | - | | 1兆 | -52.6% |
| 2022/03 | - | | - | | 2.97兆 | +197.4% |
| 2022/09 | - | | - | | 2.14兆 | -28.1% |
| 2023/03 | 7.8兆 | -4.4% | - | | 4.39兆 | +105.3% |
| 2023/09 | - | | - | | 3.41兆 | -22.3% |
| 2024/03 | - | | - | | 7.27兆 | +113.4% |
