| （単位：千ドル） | 売上原価 | 前年比（％） |
|---|---|---|
| 2Q18 | 300,000 | +0.7% |
| 1Q18 | 288,000 | +2.1% |
| 4Q17 | 347,000 | +8.8% |
| 3Q17 | 294,000 | -8.4% |
| 2Q17 | 298,000 | -3.6% |
| 1Q17 | 282,000 | -3.1% |
| 4Q16 | 319,000 | +0.8% |
| 3Q16 | 321,000 | -4.8% |
| 2Q16 | 309,000 | +2.9% |
| 1Q16 | 291,000 | -0.9% |
| 4Q15 | 316,549 | -16.2% |
| 3Q15 | 337,051 | -3.5% |
| 2Q15 | 300,152 | -4.1% |
| 1Q15 | 293,647 | -4.2% |
| 4Q14 | 377,944 | -43.5% |
| 3Q14 | 349,209 | -27.4% |
| 2Q14 | 313,011 | -39.3% |
| 1Q14 | 306,647 | -45.2% |
| 4Q13 | 668,408 | +5.2% |
| 3Q13 | 481,285 | -19.8% |
| 2Q13 | 515,731 | -2.3% |
| 1Q13 | 559,892 | +10.0% |
| 4Q12 | 635,230 | +13.8% |
| 3Q12 | 600,459 | +14.9% |
| 2Q12 | 527,670 | +11.3% |
| 1Q12 | 509,211 | +4.6% |
| 4Q11 | 558,101 | +6.0% |
| 3Q11 | 522,396 | +7.2% |
| 2Q11 | 473,899 | +4.6% |
| 1Q11 | 486,746 | - |
| 4Q10 | 526,674 | - |
| 3Q10 | 487,311 | - |
| 2Q10 | 453,037 | - |