| （単位：千ドル） | 有価証券 | 前年比（％） |
|---|---|---|
| 3Q21 | 500 | -99.1% |
| 2Q21 | 17,500 | -73.2% |
| 1Q21 | 29,500 | -75.5% |
| 4Q20 | 40,400 | -75.1% |
| 3Q20 | 58,600 | -68.4% |
| 2Q20 | 65,300 | -65.6% |
| 1Q20 | 120,200 | -35.8% |
| 4Q19 | 162,400 | -53.6% |
| 3Q19 | 185,622 | +13.7% |
| 2Q19 | 189,881 | +16.1% |
| 1Q19 | 187,120 | +25.7% |
| 4Q18 | 350,040 | +109.0% |
| 3Q18 | 163,281 | -5.9% |
| 2Q18 | 163,546 | -11.7% |
| 1Q18 | 148,853 | -16.4% |
| 4Q17 | 167,479 | +3.8% |
| 3Q17 | 173,523 | +157.9% |
| 2Q17 | 185,117 | +419.9% |
| 1Q17 | 177,990 | - |
| 4Q16 | 161,396 | - |
| 3Q16 | 67,293 | - |
| 2Q16 | 35,605 | - |