| （単位：千ドル） | 有価証券 | 前年比（％） |
|---|---|---|
| 3Q20 | 1,926 | -93.6% |
| 2Q20 | 7,789 | -74.9% |
| 1Q20 | 9,841 | +6.3% |
| 4Q19 | 17,512 | -25.2% |
| 3Q19 | 30,148 | +129.4% |
| 2Q19 | 31,026 | +675.3% |
| 1Q19 | 9,261 | +1596.2% |
| 4Q18 | 23,400 | +248.1% |
| 3Q18 | 13,144 | -48.8% |
| 2Q18 | 4,002 | -82.1% |
| 1Q18 | 546 | -98.9% |
| 4Q17 | 6,722 | -92.4% |
| 3Q17 | 25,675 | -78.0% |
| 2Q17 | 22,299 | -78.8% |
| 1Q17 | 50,140 | -25.8% |
| 4Q16 | 88,718 | +771.8% |
| 3Q16 | 116,657 | +799.9% |
| 2Q16 | 104,984 | +674.9% |
| 1Q16 | 67,591 | +457.6% |
| 4Q15 | 10,177 | +19.7% |
| 3Q15 | 12,963 | - |
| 2Q15 | 13,548 | - |
| 1Q15 | 12,122 | - |
| 4Q14 | 8,500 | - |