| （単位：千ドル） | 投資有価証券 | 前年比（％） |
|---|---|---|
| 3Q19 | 10,000 | -61.5% |
| 2Q19 | 8,000 | -75.8% |
| 1Q19 | 22,000 | -75.8% |
| 4Q18 | 7,000 | -92.4% |
| 3Q18 | 26,000 | -87.4% |
| 2Q18 | 33,000 | -83.4% |
| 1Q18 | 91,000 | -53.6% |
| 4Q17 | 92,000 | -50.8% |
| 3Q17 | 207,000 | -55.2% |
| 2Q17 | 199,000 | -59.1% |
| 1Q17 | 196,000 | -55.6% |
| 4Q16 | 187,000 | -57.4% |
| 3Q16 | 462,000 | +6.0% |
| 2Q16 | 487,000 | -1.0% |
| 1Q16 | 441,000 | -13.0% |
| 4Q15 | 439,000 | -9.5% |
| 3Q15 | 436,000 | -15.8% |
| 2Q15 | 492,000 | -8.7% |
| 1Q15 | 507,000 | -5.6% |
| 4Q14 | 485,000 | -4.5% |
| 3Q14 | 518,000 | -24.4% |
| 2Q14 | 539,000 | -25.1% |
| 1Q14 | 537,000 | -21.4% |
| 4Q13 | 508,000 | +93.9% |
| 3Q13 | 685,000 | +178.5% |
| 2Q13 | 720,000 | +174.8% |
| 1Q13 | 683,000 | +113.4% |
| 1Q12 | 246,000 | -19.6% |
| 4Q12 | 262,000 | -60.7% |
| 3Q12 | 320,000 | -62.2% |
| 2Q12 | 352,000 | -57.2% |
| 1Q12 | 306,000 | -62.5% |
| 4Q11 | 666,000 | -1.8% |
| 3Q11 | 847,000 | +25.9% |
| 2Q11 | 823,000 | - |
| 1Q11 | 816,000 | - |
| 4Q10 | 678,000 | - |
| 3Q10 | 673,000 | - |