| （単位：千ドル） | 営業利益 | 前年比（％） |
|---|---|---|
| 3Q18 | 43,332 | -13.6% |
| 2Q18 | 13,272 | -40.5% |
| 1Q18 | 44,138 | -42.8% |
| 4Q17 | 82,996 | -17.8% |
| 3Q17 | 50,161 | +36.6% |
| 2Q17 | 22,306 | -57.1% |
| 1Q17 | 77,099 | +20.8% |
| 4Q16 | 101,015 | +1062.8% |
| 3Q16 | 36,727 | -60.9% |
| 2Q16 | 52,056 | -42.1% |
| 1Q16 | 63,830 | -24.9% |
| 4Q15 | 8,687 | -91.7% |
| 3Q15 | 94,007 | -3.5% |
| 2Q15 | 89,858 | -7.6% |
| 1Q15 | 85,032 | +11.6% |
| 4Q14 | 104,335 | +67.3% |
| 3Q14 | 97,386 | -0.3% |
| 2Q14 | 97,253 | +23.2% |
| 1Q14 | 76,169 | -20.3% |
| 4Q13 | 62,368 | -35.1% |
| 3Q13 | 97,708 | +21.7% |
| 2Q13 | 78,936 | -17.1% |
| 1Q13 | 95,531 | +3.2% |
| 4Q12 | 96,033 | -16.1% |
| 3Q12 | 80,263 | +52.6% |
| 2Q12 | 95,183 | - |
| 1Q12 | 92,594 | -7.0% |
| 4Q11 | 114,442 | - |
| 3Q11 | 52,587 | -46.6% |
| 1Q11 | 99,558 | - |
| 3Q10 | 98,532 | - |