| （単位：千ドル） | 投資有価証券 | 前年比（％） |
|---|---|---|
| 4Q20 | 49,000 | -83.7% |
| 3Q20 | 47,000 | -84.2% |
| 2Q20 | 36,000 | -88.0% |
| 1Q20 | 34,000 | -87.9% |
| 4Q19 | 300,000 | +19.5% |
| 3Q19 | 298,000 | +7.2% |
| 2Q19 | 300,000 | +10.7% |
| 1Q19 | 281,000 | +3.7% |
| 4Q18 | 251,000 | -6.3% |
| 3Q18 | 278,000 | +7.8% |
| 2Q18 | 271,000 | +8.4% |
| 1Q18 | 271,000 | +12.4% |
| 4Q17 | 268,000 | +14.0% |
| 3Q17 | 258,000 | +10.7% |
| 2Q17 | 250,000 | +11.6% |
| 1Q17 | 241,000 | +9.5% |
| 4Q16 | 235,000 | +6.3% |
| 3Q16 | 233,000 | +7.9% |
| 2Q16 | 224,000 | -1.8% |
| 1Q16 | 220,000 | -5.2% |
| 4Q15 | 221,000 | -1.3% |
| 3Q15 | 216,000 | -1.4% |
| 2Q15 | 228,000 | +4.1% |
| 1Q15 | 232,000 | +9.4% |
| 4Q14 | 224,000 | +3.7% |
| 3Q14 | 219,000 | +4.3% |
| 2Q14 | 219,000 | +7.9% |
| 1Q14 | 212,000 | +3.9% |
| 4Q13 | 216,000 | +0.5% |
| 3Q13 | 210,000 | -6.7% |
| 2Q13 | 203,000 | -6.9% |
| 1Q13 | 204,000 | -14.6% |
| 4Q12 | 215,000 | -18.9% |
| 3Q12 | 225,000 | -35.7% |
| 2Q12 | 218,000 | -34.7% |
| 1Q12 | 239,000 | -46.8% |
| 4Q11 | 265,000 | -41.5% |
| 3Q11 | 350,000 | -33.1% |
| 2Q11 | 334,000 | - |
| 1Q11 | 449,000 | -30.0% |
| 4Q10 | 453,000 | - |
| 3Q10 | 523,000 | - |
| 1Q10 | 641,000 | - |