営業利益又は営業損失（△）、環境対策費、当期純利益
- 【期間】
| 年度 | 営業利益又は営業損失（△） | 環境対策費 | 当期純利益 |
|---|
| 2008/12 | 257億 | | - | | - | |
| 2009/12 | 287億 | +12% | - | | - | |
| 2010/03 | 97.7億 | -66% | - | | - | |
| 2010/06 | 203億 | +108.2% | - | | - | |
| 2010/09 | 286億 | +40.8% | - | | - | |
| 2010/12 | 476億 | +66.1% | 668百万 | | - | |
| 2011/03 | 97.1億 | -79.6% | - | | - | |
| 2011/06 | 198億 | +103.7% | - | | - | |
| 2011/09 | 294億 | +48.5% | - | | - | |
| 2011/12 | 539億 | +83.6% | - | | - | |
| 2012/03 | 160億 | -70.3% | - | | - | |
| 2012/06 | 323億 | +101.6% | - | | - | |
| 2012/09 | 437億 | +35.5% | - | | - | |
| 2012/12 | 697億 | +59.5% | - | | - | |
| 2013/03 | 150億 | -78.5% | - | | - | |
| 2013/06 | 297億 | +98.7% | - | | - | |
| 2013/09 | 430億 | +44.5% | - | | - | |
| 2013/12 | 771億 | +79.3% | - | | - | |
| 2014/03 | 185億 | -76% | - | | - | |
| 2014/06 | 351億 | +89.9% | - | | - | |
| 2014/09 | 491億 | +39.8% | - | | - | |
| 2014/12 | 863億 | +75.8% | - | | - | |
| 2015/03 | 121億 | -85.9% | - | | - | |
| 2015/06 | 293億 | +141.3% | - | | - | |
| 2015/09 | 425億 | +45.3% | - | | - | |
| 2015/12 | 771億 | +81.3% | - | | - | |
| 2016/03 | 137億 | -82.3% | - | | - | |
| 2016/06 | 308億 | +125% | - | | - | |
| 2016/09 | 425億 | +38% | - | | - | |
| 2016/12 | 358億 | -15.8% | - | | - | |
| 2017/03 | - | | - | | - | |
| 2017/06 | - | | - | | - | |
| 2017/09 | - | | - | | - | |
| 2017/12 | 135億 | -62.3% | - | | - | |
| 2018/03 | - | | - | | - | |
| 2018/06 | - | | - | | - | |
| 2018/09 | - | | - | | - | |
| 2018/12 | 196億 | +45.2% | - | | 372億 | |
| 2019/03 | 59.9億 | -69.4% | - | | 29.2億 | -92.2% |
| 2019/06 | 165億 | +174.9% | - | | 67.6億 | +131.5% |
| 2019/09 | 230億 | +39.8% | - | | 87.8億 | +30% |
| 2019/12 | 133億 | -42.2% | - | | 132億 | +50% |
| 2020/03 | 27.5億 | -79.3% | - | | -32.2億 | 赤転 |
| 2020/06 | -29.7億 | 赤転 | - | | -95億 | 赤拡 |
| 2020/09 | 65.1億 | 黒転 | - | | -71億 | 赤縮 |
| 2020/12 | 84.6億 | +30% | - | | 230億 | 黒転 |
| 2021/03 | 156億 | +84.2% | - | | 112億 | -51.4% |
| 2021/06 | 286億 | +83.4% | - | | 215億 | +91.9% |
| 2021/09 | 299億 | +4.5% | - | | 219億 | +2.1% |
| 2021/12 | -57億 | 赤転 | - | | 300億 | +36.9% |
| 2022/03 | 142億 | 黒転 | - | | 123億 | -59.1% |
| 2022/06 | 126億 | -11.3% | - | | 186億 | +51.7% |
| 2022/09 | 98.4億 | -21.8% | - | | 164億 | -12.1% |
| 2022/12 | -362億 | 赤転 | - | | 125億 | -23.9% |
| 2023/03 | 77.7億 | 黒転 | - | | 46.8億 | -62.4% |
| 2023/06 | 168億 | +116.4% | - | | 75.7億 | +61.6% |
| 2023/09 | 414億 | +146.5% | - | | 278億 | +267.1% |
| 2023/12 | 402億 | -2.9% | - | | 385億 | +38.6% |
| 2024/03 | 207億 | -48.5% | - | | 262億 | -31.9% |
| 2024/06 | 420億 | +102.7% | - | | 411億 | +56.9% |
