| （単位：千ドル） | 投資有価証券 | 前年比（％） |
|---|---|---|
| 4Q19 | 0 | -100.0% |
| 3Q19 | 0 | -100.0% |
| 2Q19 | 67 | -99.3% |
| 1Q19 | 369 | -94.1% |
| 4Q18 | 6,658 | - |
| 3Q18 | 8,716 | +1689.7% |
| 2Q18 | 9,021 | +656.2% |
| 1Q18 | 6,272 | +273.3% |
| 4Q17 | 0 | -100.0% |
| 3Q17 | 487 | -87.7% |
| 2Q17 | 1,193 | -91.4% |
| 1Q17 | 1,680 | -90.6% |
| 4Q16 | 2,974 | -84.9% |
| 3Q16 | 3,968 | -75.5% |
| 2Q16 | 13,949 | +90.5% |
| 1Q16 | 17,934 | +672.7% |
| 4Q15 | 19,635 | +492.7% |
| 3Q15 | 16,195 | +799.7% |
| 2Q15 | 7,324 | +104.5% |
| 1Q15 | 2,321 | -39.4% |
| 4Q14 | 3,313 | -33.6% |
| 3Q14 | 1,800 | -68.9% |
| 2Q14 | 3,582 | +102.7% |
| 1Q14 | 3,833 | +557.5% |
| 4Q13 | 4,988 | +663.9% |
| 3Q13 | 5,787 | -60.4% |
| 2Q13 | 1,767 | -92.2% |
| 1Q13 | 583 | -97.8% |
| 4Q12 | 653 | -97.9% |
| 3Q12 | 14,599 | -36.1% |
| 2Q12 | 22,789 | +4.2% |
| 1Q12 | 26,842 | - |
| 4Q11 | 31,642 | - |
| 3Q11 | 22,862 | - |
| 2Q11 | 21,866 | - |