| （単位：千ドル） | 有価証券 | 前年比（％） |
|---|---|---|
| 4Q18 | 0 | -100.0% |
| 3Q18 | 0 | -100.0% |
| 2Q18 | 59,670 | -56.2% |
| 1Q18 | 29,208 | -78.1% |
| 4Q17 | 166,773 | -3.8% |
| 3Q17 | 156,866 | -30.6% |
| 2Q17 | 136,202 | -35.3% |
| 1Q17 | 133,409 | -25.3% |
| 4Q16 | 173,437 | +50.4% |
| 3Q16 | 225,996 | +80.8% |
| 2Q16 | 210,470 | +63.9% |
| 1Q16 | 178,540 | +8.9% |
| 4Q15 | 115,297 | -52.0% |
| 3Q15 | 125,031 | -50.1% |
| 2Q15 | 128,441 | -47.0% |
| 1Q15 | 163,968 | -25.1% |
| 4Q14 | 240,140 | +37.7% |
| 3Q14 | 250,732 | - |
| 2Q14 | 242,148 | +65.4% |
| 1Q14 | 218,876 | +126.5% |
| 4Q13 | 174,399 | +25.6% |
| 2Q13 | 146,386 | -33.2% |
| 1Q13 | 96,648 | -20.5% |
| 4Q12 | 138,887 | +13.8% |
| 3Q12 | 198,897 | +48.0% |
| 2Q12 | 219,130 | +120.7% |
| 1Q12 | 121,633 | - |
| 4Q11 | 122,066 | - |
| 3Q11 | 134,419 | - |
| 2Q11 | 99,289 | - |