| （単位：千ドル） | 営業利益 | 前年比（％） |
|---|---|---|
| 3Q18 | 17,504 | -40.1% |
| 2Q18 | 18,901 | -32.4% |
| 1Q18 | 20,166 | -18.7% |
| 3Q17 | 29,204 | +4.6% |
| 2Q17 | 27,948 | +2.1% |
| 1Q17 | 24,797 | -8.9% |
| 4Q16 | 22,110 | -294.2% |
| 3Q16 | 27,931 | -120.0% |
| 2Q16 | 27,368 | +0.1% |
| 1Q16 | 27,229 | +0.8% |
| 4Q15 | -11,383 | -168.8% |
| 3Q15 | -139,310 | -571.7% |
| 2Q15 | 27,353 | -7.5% |
| 1Q15 | 27,008 | +105.1% |
| 4Q14 | 16,553 | -155.6% |
| 3Q14 | 29,534 | -296.0% |
| 2Q14 | 29,557 | +62.7% |
| 1Q14 | 13,167 | -69.2% |
| 4Q13 | -29,768 | -213.1% |
| 3Q13 | -15,068 | -134.2% |
| 2Q13 | 18,171 | -61.4% |
| 1Q13 | 42,805 | -22.8% |
| 4Q12 | 26,319 | -46.7% |
| 3Q12 | 44,006 | -20.0% |
| 2Q12 | 47,047 | -7.6% |
| 1Q12 | 55,464 | +10.9% |
| 4Q11 | 49,365 | - |
| 3Q11 | 55,023 | +5.8% |
| 2Q11 | 50,908 | -7.2% |
| 1Q11 | 50,005 | - |
| 3Q10 | 52,013 | - |
| 2Q10 | 54,848 | - |