| （単位：百万円） | 投資有価証券 | 前年比（％） |
|---|---|---|
| 2026/5 | 20,542 | +114.7% |
| 2025/5 | 9,567 | -14.9% |
| 2024/5 | 11,241 | -3.4% |
| 2023/5 | 11,634 | +41.0% |
| 2022/5 | 8,249 | -9.2% |
| 2021/5 | 9,084 | +0.8% |
| 2020/5 | 9,015 | -33.9% |
| 2019/5 | 13,646 | -11.6% |
| 2018/5 | 15,443 | +25.0% |
| 2017/5 | 12,357 | +51.0% |
| 2016/5 | 8,184 | +4.0% |
| 2015/5 | 7,869 | +28.6% |
| 2014/5 | 6,120 | +16.5% |
| 2013/5 | 5,253 | - |