| （単位：千ドル） | 有価証券 | 前年比（％） |
|---|---|---|
| 1Q23 | 14,944 | +802.4% |
| 3Q22 | 749 | -80.2% |
| 2Q22 | 1,050 | -80.2% |
| 1Q22 | 1,656 | -75.2% |
| 4Q21 | 1,967 | -75.4% |
| 3Q21 | 3,782 | -60.4% |
| 2Q21 | 5,300 | -49.2% |
| 1Q21 | 6,673 | -58.2% |
| 4Q20 | 8,005 | -58.8% |
| 3Q20 | 9,544 | -55.4% |
| 2Q20 | 10,423 | -58.8% |
| 1Q20 | 15,961 | -40.8% |
| 4Q19 | 19,426 | -43.5% |
| 3Q19 | 21,377 | -45.4% |
| 2Q19 | 25,304 | -46.3% |
| 1Q19 | 26,942 | -46.5% |
| 4Q18 | 34,387 | -31.4% |
| 3Q18 | 39,184 | -15.8% |
| 2Q18 | 47,079 | -0.2% |
| 1Q18 | 50,386 | +35.1% |
| 4Q17 | 50,145 | +17.4% |
| 3Q17 | 46,559 | +4.4% |
| 2Q17 | 47,196 | -4.4% |
| 1Q17 | 37,285 | -22.0% |
| 4Q16 | 42,718 | +47.8% |
| 3Q16 | 44,600 | +52.8% |
| 2Q16 | 49,376 | +49.2% |
| 1Q16 | 47,787 | +98.0% |
| 4Q15 | 28,900 | +43.2% |
| 3Q15 | 29,191 | +54.4% |
| 2Q15 | 33,101 | +34.5% |
| 1Q15 | 24,129 | -15.9% |
| 4Q14 | 20,186 | -38.1% |
| 3Q14 | 18,912 | -29.0% |
| 2Q14 | 24,605 | -34.2% |
| 1Q14 | 28,693 | -31.9% |
| 4Q13 | 32,622 | -38.9% |
| 3Q13 | 26,640 | -53.9% |
| 2Q13 | 37,417 | -56.7% |
| 1Q13 | 42,158 | -49.5% |
| 4Q12 | 53,425 | -46.7% |
| 3Q12 | 57,809 | -34.9% |
| 2Q12 | 86,364 | +10.0% |
| 1Q12 | 83,469 | +42.2% |
| 4Q11 | 100,321 | +179.9% |
| 3Q11 | 88,774 | +526.8% |
| 2Q11 | 78,536 | - |
| 1Q11 | 58,691 | - |
| 4Q10 | 35,837 | - |
| 3Q10 | 14,164 | - |