| （単位：千ドル） | 投資有価証券 | 前年比（％） |
|---|---|---|
| 4Q21 | 17,009 | -64.4% |
| 3Q21 | 17,271 | -38.0% |
| 2Q21 | 36,131 | +291.8% |
| 1Q21 | 33,706 | +234.7% |
| 4Q20 | 47,718 | +42.8% |
| 3Q20 | 27,841 | -25.9% |
| 2Q20 | 9,222 | -76.7% |
| 1Q20 | 10,070 | -72.5% |
| 4Q19 | 33,420 | -25.3% |
| 3Q19 | 37,563 | -10.1% |
| 2Q19 | 39,555 | +10.4% |
| 1Q19 | 36,585 | +4.9% |
| 4Q18 | 44,752 | +116.3% |
| 3Q18 | 41,788 | +128.5% |
| 2Q18 | 35,828 | - |
| 1Q18 | 34,880 | - |
| 4Q17 | 20,690 | - |
| 3Q17 | 18,290 | - |