Development Projects In Progress And Development Projects In Progress And Deferred Structures Net、自己株式、浚渫船（純額）
- 【期間】
| 年度 | Development Projects In Progress And Development Projects In Progress And Deferred Structures Net | 自己株式 | 浚渫船（純額） |
|---|
| 2008/03 | - | | -0.2億 | | 17.6億 | |
| 2009/03 | - | | -0.22億 | 赤拡 | 12.6億 | -28.3% |
| 2010/03 | - | | -0.22億 | ±0% | 10.1億 | -20.1% |
| 2010/12 | - | | -0.22億 | ±0% | - | |
| 2011/03 | - | | -0.22億 | ±0% | 9.4億 | -6.9% |
| 2011/06 | - | | -0.22億 | ±0% | - | |
| 2011/09 | - | | -0.22億 | ±0% | - | |
| 2011/12 | - | | -0.23億 | 赤拡 | - | |
| 2012/03 | - | | -0.23億 | ±0% | 5.4億 | -42.6% |
| 2012/06 | - | | -0.23億 | ±0% | - | |
| 2012/09 | - | | -0.23億 | ±0% | - | |
| 2012/12 | - | | -0.23億 | ±0% | - | |
| 2013/03 | - | | -0.23億 | ±0% | 7.42億 | +37.4% |
| 2013/06 | - | | -0.23億 | ±0% | - | |
| 2013/09 | - | | -0.23億 | ±0% | - | |
| 2013/12 | - | | -0.24億 | 赤拡 | - | |
| 2014/03 | - | | -0.24億 | ±0% | 10.9億 | +46.6% |
| 2014/06 | - | | -0.24億 | ±0% | - | |
| 2014/09 | - | | -0.25億 | 赤拡 | - | |
| 2014/12 | - | | -0.25億 | ±0% | - | |
| 2015/03 | - | | -0.25億 | ±0% | 9.35億 | -14.1% |
| 2015/06 | - | | -0.25億 | ±0% | - | |
| 2015/09 | - | | -0.25億 | ±0% | - | |
| 2015/12 | - | | -0.25億 | ±0% | - | |
| 2016/03 | - | | -0.25億 | ±0% | 7.17億 | -23.3% |
| 2016/06 | - | | -0.25億 | ±0% | - | |
| 2016/09 | - | | -0.25億 | ±0% | - | |
| 2016/12 | - | | -0.25億 | ±0% | - | |
| 2017/03 | - | | -0.26億 | 赤拡 | 5.87億 | -18.1% |
| 2017/06 | - | | -0.26億 | ±0% | - | |
| 2017/09 | - | | -3.25億 | 赤拡 | - | |
| 2017/12 | - | | -3.26億 | 赤拡 | - | |
| 2018/03 | - | | -3.26億 | ±0% | 4.81億 | -18.1% |
| 2018/06 | - | | -3.26億 | ±0% | - | |
| 2018/09 | - | | -3.83億 | 赤拡 | - | |
| 2018/12 | - | | -3.83億 | ±0% | - | |
| 2019/03 | - | | -3.83億 | ±0% | 4.14億 | -13.9% |
| 2019/06 | - | | -3.83億 | ±0% | - | |
| 2019/09 | - | | -3.73億 | 赤縮 | - | |
| 2019/12 | - | | -3.73億 | ±0% | - | |
| 2020/03 | - | | -3.73億 | ±0% | 4.17億 | +0.7% |
| 2020/06 | - | | -3.73億 | ±0% | - | |
| 2020/09 | - | | -5.89億 | 赤拡 | - | |
| 2020/12 | - | | -5.9億 | 赤拡 | - | |
| 2021/03 | - | | -5.9億 | ±0% | 2.58億 | -38.1% |
| 2021/06 | - | | -5.79億 | 赤縮 | - | |
| 2021/09 | - | | -5.63億 | 赤縮 | - | |
| 2021/12 | - | | -5.64億 | 赤拡 | - | |
| 2022/03 | - | | -5.64億 | ±0% | 9.19億 | +256.2% |
| 2022/06 | - | | -5.11億 | 赤縮 | - | |
| 2022/09 | - | | -5.11億 | ±0% | - | |
| 2022/12 | - | | -5.11億 | ±0% | - | |
| 2023/03 | - | | -5.11億 | ±0% | 8.82億 | -4% |
| 2023/06 | - | | -4.69億 | 赤縮 | - | |
| 2023/09 | - | | -7.73億 | 赤拡 | - | |
| 2023/12 | - | | -7.73億 | ±0% | - | |
| 2024/03 | - | | -7.73億 | ±0% | 6.59億 | -25.3% |
| 2024/06 | - | | -27.2億 | 赤拡 | - | |
| 2024/09 | - | | -27.6億 | 赤拡 | - | |
| 2024/12 | - | | -27.6億 | ±0% | - | |
| 2025/03 | - | | -27.6億 | ±0% | 4.55億 | -31% |
| 2025/06 | - | | -66.7億 | 赤拡 | - | |
