| （単位：百万ドル） | 有価証券 | 前年比（％） |
|---|---|---|
| 4Q21 | 9 | -98.7% |
| 3Q21 | 36 | -90.0% |
| 2Q21 | 136 | -79.1% |
| 1Q21 | 383 | +92.5% |
| 4Q20 | 702 | +258.2% |
| 3Q20 | 361 | +581.1% |
| 2Q20 | 651 | +1151.9% |
| 1Q20 | 199 | -53.0% |
| 4Q19 | 196 | -78.0% |
| 3Q19 | 53 | -94.4% |
| 2Q19 | 52 | -94.4% |
| 1Q19 | 423 | -59.4% |
| 4Q18 | 892 | -31.8% |
| 3Q18 | 944 | -27.1% |
| 2Q18 | 933 | -27.0% |
| 1Q18 | 1,042 | -11.4% |
| 4Q17 | 1,307 | +13.9% |
| 3Q17 | 1,295 | +18.8% |
| 2Q17 | 1,278 | +24.9% |
| 1Q17 | 1,176 | -11.7% |
| 4Q16 | 1,147 | +7.8% |
| 3Q16 | 1,090 | -32.0% |
| 2Q16 | 1,023 | -48.6% |
| 1Q16 | 1,332 | -9.9% |
| 4Q15 | 1,064 | -33.2% |
| 3Q15 | 1,602 | +3.8% |
| 2Q15 | 1,989 | +53.1% |
| 1Q15 | 1,478 | +5.4% |
| 4Q14 | 1,593 | - |
| 3Q14 | 1,544 | - |
| 2Q14 | 1,299 | - |
| 1Q14 | 1,402 | - |