| （単位：百万ドル） | 投資有価証券 | 前年比（％） |
|---|---|---|
| 4Q21 | 840 | -61.7% |
| 3Q21 | 953 | -65.0% |
| 2Q21 | 1,262 | -56.2% |
| 1Q21 | 1,409 | -52.1% |
| 4Q20 | 2,192 | -33.1% |
| 3Q20 | 2,720 | -20.7% |
| 2Q20 | 2,884 | -19.4% |
| 1Q20 | 2,943 | -15.1% |
| 4Q19 | 3,276 | -3.3% |
| 3Q19 | 3,428 | -3.8% |
| 2Q19 | 3,577 | +16.5% |
| 1Q19 | 3,465 | +0.9% |
| 4Q18 | 3,388 | -8.7% |
| 3Q18 | 3,562 | -7.3% |
| 2Q18 | 3,071 | -31.5% |
| 1Q18 | 3,435 | -33.3% |
| 4Q17 | 3,712 | -21.3% |
| 3Q17 | 3,844 | -8.2% |
| 2Q17 | 4,481 | +25.6% |
| 1Q17 | 5,149 | +66.3% |
| 4Q16 | 4,716 | +149.4% |
| 3Q16 | 4,189 | +129.0% |
| 2Q16 | 3,567 | +106.5% |
| 1Q16 | 3,097 | +84.9% |
| 4Q15 | 1,891 | -6.5% |
| 3Q15 | 1,829 | -15.0% |
| 2Q15 | 1,727 | -20.9% |
| 1Q15 | 1,675 | -5.1% |
| 4Q14 | 2,023 | +37.3% |
| 3Q14 | 2,153 | +36.0% |
| 2Q14 | 2,184 | +33.0% |
| 1Q14 | 1,765 | +34.8% |
| 4Q13 | 1,473 | +198.8% |
| 3Q13 | 1,583 | +237.5% |
| 2Q13 | 1,642 | +189.1% |
| 1Q13 | 1,309 | +162.9% |
| 4Q12 | 493 | -44.5% |
| 3Q12 | 469 | -45.3% |
| 2Q12 | 568 | -42.7% |
| 1Q12 | 498 | -73.3% |
| 4Q11 | 889 | -70.6% |
| 3Q11 | 858 | -75.4% |
| 2Q11 | 992 | -74.9% |
| 1Q11 | 1,863 | -56.9% |
| 4Q10 | 3,026 | - |
| 3Q10 | 3,482 | - |
| 2Q10 | 3,947 | - |
| 1Q10 | 4,326 | - |