| （単位：千ドル） | 投資有価証券 | 前年比（％） |
|---|---|---|
| 3Q20 | 31,768 | -57.1% |
| 2Q20 | 1,145 | -99.1% |
| 1Q20 | 38,232 | -77.8% |
| 4Q19 | 71,526 | -69.7% |
| 3Q19 | 73,995 | -73.2% |
| 2Q19 | 120,966 | -59.7% |
| 1Q19 | 172,472 | +43.6% |
| 4Q18 | 236,108 | +69.6% |
| 3Q18 | 276,228 | +69.4% |
| 2Q18 | 299,971 | +57.7% |
| 1Q18 | 120,089 | -49.5% |
| 4Q17 | 139,198 | -49.1% |
| 3Q17 | 163,052 | -17.5% |
| 2Q17 | 190,242 | +144.9% |
| 1Q17 | 237,865 | +175.4% |
| 4Q16 | 273,340 | +182.1% |
| 3Q16 | 197,570 | +183.7% |
| 2Q16 | 77,666 | -14.9% |
| 1Q16 | 86,357 | +281.6% |
| 4Q15 | 96,891 | - |
| 3Q15 | 69,632 | - |
| 2Q15 | 91,284 | - |
| 1Q15 | 22,628 | - |