| （単位：千ドル） | 有価証券 | 前年比（％） |
|---|---|---|
| 2023/12 | 501 | -88.1% |
| 2022/12 | 4,224 | -70.7% |
| 2021/12 | 14,420 | -50.9% |
| 2020/12 | 29,374 | +22.6% |
| 2019/12 | 23,967 | -35.8% |
| 2018/12 | 37,329 | +271.0% |
| 2017/12 | 10,061 | - |
| 2016/12 | 0 | -100.0% |
| 2015/12 | 41,233 | -41.9% |
| 2014/12 | 70,952 | +0.1% |
| 2013/12 | 70,869 | -10.6% |
| 2012/12 | 79,259 | +31.2% |
| 2011/12 | 60,395 | +316.3% |
| 2010/12 | 14,507 | - |