減価償却費 - 社会基盤・海洋、当期変動額合計、災害損失引当金の増減額（△は減少）他2件
- 【期間】
| 年度 | 減価償却費 - 社会基盤・海洋 | 当期変動額合計 | 災害損失引当金の増減額（△は減少） | 破産更生債権等 | 有形固定資産 |
|---|
| 2008/03 | - | | 3百万 | | - | | 75.7億 | | - | |
| 2009/03 | - | | -5百万 | 赤転 | - | | 68.3億 | -9.8% | - | |
| 2010/03 | - | | -4百万 | 赤縮 | - | | 218億 | +219.8% | - | |
| 2011/03 | - | | 9百万 | 黒転 | - | | 81.9億 | -62.5% | - | |
| 2012/03 | - | | 7百万 | -22.2% | -44.8億 | | 38.1億 | -53.5% | - | |
| 2013/03 | 60.2億 | | 3百万 | -57.1% | - | | 6.5億 | -82.9% | - | |
| 2014/03 | 60.9億 | +1.1% | - | | - | | - | | - | |
| 2015/03 | 62.4億 | +2.6% | - | | - | | - | | - | |
| 2016/03 | 63.7億 | +2.1% | - | | - | | - | | - | |
| 2017/03 | 63.1億 | -1.1% | - | | - | | - | | - | |
| 2018/03 | 60.4億 | -4.1% | - | | - | | - | | - | |
| 2019/03 | 59.2億 | -2.1% | - | | - | | - | | - | |
| 2020/03 | 68.7億 | +16.1% | - | | - | | - | | 65億 | |
| 2021/03 | - | | - | | - | | - | | 332億 | +409.9% |
| 2022/03 | - | | - | | - | | - | | 732億 | +120.8% |
| 2023/03 | - | | - | | - | | - | | 73.7億 | -89.9% |
| 2024/03 | - | | - | | - | | - | | 122億 | +65.2% |
