| （単位：千ドル） | 営業利益 | 前年比（％） |
|---|---|---|
| 4Q18 | 134,671 | -15.6% |
| 3Q18 | 156,956 | -3.3% |
| 2Q18 | 156,470 | -14.7% |
| 1Q18 | 133,764 | -14.5% |
| 4Q17 | 159,508 | -8.9% |
| 3Q17 | 162,235 | -14.2% |
| 2Q17 | 183,396 | -1.8% |
| 1Q17 | 156,467 | -55981.1% |
| 4Q16 | 175,104 | -15.7% |
| 3Q16 | 189,153 | -1.2% |
| 2Q16 | 186,814 | -3.4% |
| 1Q16 | -280 | -100.2% |
| 4Q15 | 207,703 | +3.0% |
| 3Q15 | 191,440 | -13.2% |
| 2Q15 | 193,391 | -15.0% |
| 1Q15 | 167,714 | +1.3% |
| 4Q14 | 201,558 | +21.1% |
| 3Q14 | 220,599 | -8.3% |
| 2Q14 | 227,477 | +5.1% |
| 1Q14 | 165,634 | -34.2% |
| 4Q13 | 166,483 | +101.3% |
| 3Q13 | 240,572 | +19.1% |
| 2Q13 | 216,468 | +1.7% |
| 1Q13 | 251,536 | +24.6% |
| 4Q12 | 82,716 | -58.0% |
| 3Q12 | 201,912 | -10.4% |
| 2Q12 | 212,764 | -12.4% |
| 1Q12 | 201,867 | +1.7% |
| 4Q11 | 197,073 | +73.6% |
| 3Q11 | 225,451 | -1.2% |
| 2Q11 | 243,013 | - |
| 1Q11 | 198,560 | -10.8% |
| 4Q10 | 113,542 | - |
| 3Q10 | 228,251 | - |
| 1Q10 | 222,666 | - |