| （単位：千ドル） | 営業利益 | 前年比（％） |
|---|---|---|
| 4Q21 | 51,200 | -130.0% |
| 3Q21 | 34,327 | -29.2% |
| 2Q21 | 69,905 | +10.3% |
| 1Q21 | 30,039 | +558.9% |
| 4Q20 | -170,700 | -313.1% |
| 3Q20 | 48,494 | -3.7% |
| 2Q20 | 63,391 | +10.3% |
| 1Q20 | 4,559 | -87.4% |
| 4Q19 | 80,100 | +7.1% |
| 3Q19 | 50,346 | -25.3% |
| 2Q19 | 57,475 | -30.6% |
| 1Q19 | 36,140 | +149.2% |
| 4Q18 | 74,800 | - |
| 3Q18 | 67,431 | +31.8% |
| 2Q18 | 82,771 | +73.7% |
| 1Q18 | 14,500 | -66.9% |
| 3Q17 | 51,160 | +29.1% |
| 2Q17 | 47,644 | -20.9% |
| 1Q17 | 43,814 | -2.4% |
| 3Q16 | 39,619 | -26.7% |
| 2Q16 | 60,265 | -20.7% |
| 1Q16 | 44,909 | -9.5% |
| 3Q15 | 54,042 | -26.4% |
| 1Q15 | 76,004 | +51.4% |
| 1Q15 | 49,630 | +39.6% |
| 4Q14 | 47,500 | +241.7% |
| 3Q14 | 73,380 | -12.3% |
| 2Q14 | 50,187 | -20.3% |
| 1Q14 | 35,564 | -8.8% |
| 4Q13 | 13,900 | -80.1% |
| 3Q13 | 83,626 | +6.6% |
| 2Q13 | 62,941 | -12.6% |
| 1Q13 | 38,995 | -35.2% |
| 4Q12 | 69,700 | - |
| 3Q12 | 78,457 | +12.6% |
| 2Q12 | 71,987 | -7.4% |
| 1Q12 | 60,152 | - |
| 3Q11 | 69,650 | - |
| 2Q11 | 77,730 | - |