| （単位：千ドル） | 営業利益 | 前年比（％） |
|---|---|---|
| 3Q18 | 238,364 | +2.0% |
| 2Q18 | 230,624 | -3.4% |
| 1Q18 | 208,152 | +0.9% |
| 3Q17 | 233,729 | +48.3% |
| 2Q17 | 238,690 | +9.4% |
| 1Q17 | 206,225 | -17.6% |
| 3Q16 | 157,605 | -30.8% |
| 2Q16 | 218,124 | +6.4% |
| 1Q16 | 250,353 | +21.4% |
| 3Q15 | 227,750 | +6.0% |
| 2Q15 | 204,926 | +1.8% |
| 1Q15 | 206,209 | +16.6% |
| 3Q14 | 214,803 | - |
| 2Q14 | 201,273 | +17.8% |
| 1Q14 | 176,897 | +35.6% |
| 2Q13 | 170,815 | -1.7% |
| 1Q13 | 130,435 | -9.8% |
| 3Q12 | 162,822 | -1.0% |
| 2Q12 | 173,711 | +12.7% |
| 1Q12 | 144,661 | +4.8% |
| 3Q11 | 164,510 | +191.0% |
| 2Q11 | 154,133 | +140.6% |
| 1Q11 | 138,022 | +161.2% |
| 3Q10 | 56,524 | - |
| 2Q10 | 64,053 | - |
| 1Q10 | 52,832 | - |