| （単位：千ドル） | 有価証券 | 前年比（％） |
|---|---|---|
| 1Q21 | 1,500 | -98.4% |
| 4Q20 | 16,010 | -83.5% |
| 3Q20 | 17,167 | -84.7% |
| 2Q20 | 39,237 | -48.7% |
| 1Q20 | 94,637 | +23.8% |
| 4Q19 | 96,924 | +13.9% |
| 3Q19 | 111,933 | +39.4% |
| 2Q19 | 76,420 | -10.7% |
| 1Q19 | 76,415 | -20.5% |
| 4Q18 | 85,095 | -26.2% |
| 3Q18 | 80,321 | -36.4% |
| 2Q18 | 85,544 | -21.0% |
| 1Q18 | 96,123 | +45.1% |
| 4Q17 | 115,318 | +180.0% |
| 3Q17 | 126,202 | +182.5% |
| 2Q17 | 108,234 | +104.0% |
| 1Q17 | 66,255 | +22.6% |
| 4Q16 | 41,180 | -35.5% |
| 3Q16 | 44,671 | -39.2% |
| 2Q16 | 53,054 | -20.1% |
| 1Q16 | 54,026 | +267.4% |
| 4Q15 | 63,823 | - |
| 3Q15 | 73,456 | - |
| 2Q15 | 66,382 | - |
| 1Q15 | 14,705 | - |