| （単位：千ドル） | 有価証券 | 前年比（％） |
|---|---|---|
| 4Q20 | 28,129 | +0.9% |
| 3Q20 | 25,830 | -21.9% |
| 2Q20 | 34,254 | +34.7% |
| 1Q20 | 29,260 | +14.3% |
| 4Q19 | 27,891 | +8.0% |
| 3Q19 | 33,073 | +47.9% |
| 2Q19 | 25,428 | +11.5% |
| 1Q19 | 25,598 | +27.1% |
| 4Q18 | 25,836 | +40.4% |
| 3Q18 | 22,356 | +16.0% |
| 2Q18 | 22,797 | -3.2% |
| 1Q18 | 20,146 | -11.4% |
| 4Q17 | 18,408 | -1.5% |
| 3Q17 | 19,277 | +69.4% |
| 2Q17 | 23,555 | - |
| 1Q17 | 22,738 | - |
| 4Q16 | 18,695 | - |
| 3Q16 | 11,380 | - |