| （単位：百万円） | 投資有価証券 | 前年比（％） |
|---|---|---|
| 2026/5 | 20,326 | +10.1% |
| 2025/5 | 18,464 | -6.4% |
| 2024/5 | 19,720 | +21.3% |
| 2023/5 | 16,261 | +15.5% |
| 2022/5 | 14,077 | -5.2% |
| 2021/5 | 14,848 | +13.1% |
| 2020/5 | 13,129 | -0.1% |
| 2019/5 | 13,141 | -15.9% |
| 2018/5 | 15,624 | +12.8% |
| 2017/5 | 13,846 | +1.6% |
| 2016/5 | 13,633 | +0.3% |
| 2015/5 | 13,589 | +34.6% |
| 2014/5 | 10,094 | +9.6% |
| 2013/5 | 9,207 | - |