| （単位：千ドル） | 有価証券 | 前年比（％） |
|---|---|---|
| 4Q23 | 17,367 | -40.6% |
| 3Q23 | 17,282 | -71.1% |
| 2Q23 | 16,954 | -71.9% |
| 1Q23 | 17,958 | -16.8% |
| 4Q22 | 29,245 | +29.8% |
| 3Q22 | 59,711 | +155.3% |
| 2Q22 | 60,317 | +161.7% |
| 1Q22 | 21,586 | +22.7% |
| 4Q21 | 22,526 | +2.9% |
| 3Q21 | 23,391 | +25.1% |
| 2Q21 | 23,049 | +25.1% |
| 1Q21 | 17,588 | -2.6% |
| 4Q20 | 21,894 | +13.7% |
| 3Q20 | 18,693 | -14.7% |
| 2Q20 | 18,423 | -21.5% |
| 1Q20 | 18,059 | -25.8% |
| 4Q19 | 19,264 | -22.7% |
| 3Q19 | 21,907 | -15.1% |
| 2Q19 | 23,456 | -12.1% |
| 1Q19 | 24,344 | -12.2% |
| 4Q18 | 24,931 | - |
| 3Q18 | 25,802 | - |
| 2Q18 | 26,685 | - |
| 1Q18 | 27,715 | - |