| （単位：百万ドル） | 投資有価証券 | 前年比（％） |
|---|---|---|
| 2024/12 | 307 | -47.3% |
| 2023/12 | 583 | -52.9% |
| 2022/12 | 1,239 | -32.5% |
| 2021/12 | 1,834 | +128.8% |
| 2020/12 | 801 | +36.9% |
| 2019/12 | 585 | +15.6% |
| 2018/12 | 506 | -10.7% |
| 2017/12 | 567 | +6.6% |
| 2016/12 | 532 | +40.1% |
| 2015/12 | 379 | +57.7% |
| 2014/12 | 240 | +1000.0% |
| 2013/12 | 21 | +3.8% |
| 2012/12 | 21 | -3.2% |
| 2011/12 | 21 | -12.8% |
| 2010/12 | 25 | - |