| （単位：千ドル） | 投資有価証券 | 前年比（％） |
|---|---|---|
| 4Q20 | 15,675 | +76.5% |
| 3Q20 | 16,272 | +57.7% |
| 2Q20 | 16,976 | +30.4% |
| 1Q20 | 7,777 | -64.2% |
| 4Q19 | 8,883 | -65.1% |
| 3Q19 | 10,320 | -60.5% |
| 2Q19 | 13,020 | -51.3% |
| 1Q19 | 21,707 | -16.2% |
| 4Q18 | 25,451 | -4.6% |
| 3Q18 | 26,117 | -10.5% |
| 2Q18 | 26,748 | +8.7% |
| 1Q18 | 25,914 | +6.5% |
| 4Q17 | 26,691 | -13.6% |
| 3Q17 | 29,183 | -4.6% |
| 2Q17 | 24,616 | -32.6% |
| 1Q17 | 24,327 | +14.1% |
| 4Q16 | 30,890 | +37.6% |
| 3Q16 | 30,582 | +27.2% |
| 2Q16 | 36,512 | +101.3% |
| 1Q16 | 21,328 | +11.7% |
| 4Q15 | 22,447 | +13.5% |
| 3Q15 | 24,038 | +19.9% |
| 2Q15 | 18,135 | +117.1% |
| 1Q15 | 19,096 | +979.5% |
| 4Q14 | 19,777 | +243.7% |
| 3Q14 | 20,052 | +34.1% |
| 2Q14 | 8,353 | -49.1% |
| 1Q14 | 1,769 | -90.2% |
| 4Q13 | 5,754 | -69.5% |
| 3Q13 | 14,957 | -24.3% |
| 2Q13 | 16,397 | -17.9% |
| 1Q13 | 18,088 | - |
| 4Q12 | 18,840 | - |
| 3Q12 | 19,760 | - |
| 2Q12 | 19,968 | - |