| （単位：千ドル） | 有価証券 | 前年比（％） |
|---|---|---|
| 2024/12 | 1,900 | -96.6% |
| 2023/12 | 56,100 | -25.3% |
| 2022/12 | 75,100 | +2788.5% |
| 2021/12 | 2,600 | -40.9% |
| 2020/12 | 4,400 | +109.5% |
| 2019/12 | 2,100 | -16.0% |
| 2018/12 | 2,500 | -58.3% |
| 2017/12 | 6,000 | +36.4% |
| 2016/12 | 4,400 | +120.0% |
| 2015/12 | 2,000 | -25.9% |
| 2014/12 | 2,700 | -28.9% |
| 2013/12 | 3,800 | +111.1% |
| 2012/12 | 1,800 | -92.0% |
| 2011/12 | 22,500 | - |