| （単位：千ドル） | 営業利益 | 前年比（％） |
|---|---|---|
| 3Q23 | 8,632 | -58.3% |
| 2Q23 | 8,521 | -52.6% |
| 1Q23 | 8,470 | -34.6% |
| 3Q22 | 20,677 | -39.9% |
| 2Q22 | 17,968 | +58.3% |
| 1Q22 | 12,954 | +82.3% |
| 3Q21 | 34,401 | +360.6% |
| 2Q21 | 11,348 | +78.0% |
| 1Q21 | 7,105 | -22.5% |
| 4Q20 | 3,685 | -64.1% |
| 3Q20 | 7,469 | -49.8% |
| 2Q20 | 6,377 | -52.5% |
| 1Q20 | 9,165 | -40.6% |
| 4Q19 | 10,275 | +199.0% |
| 3Q19 | 14,888 | -8.3% |
| 2Q19 | 13,429 | -9.4% |
| 1Q19 | 15,430 | -13.1% |
| 4Q18 | 3,436 | -78.0% |
| 3Q18 | 16,240 | -1.8% |
| 2Q18 | 14,829 | -18.2% |
| 1Q18 | 17,755 | +35.6% |
| 4Q17 | 15,646 | -12.6% |
| 3Q17 | 16,531 | -0.8% |
| 2Q17 | 18,132 | -5.1% |
| 1Q17 | 13,091 | -24.0% |
| 4Q16 | 17,905 | +11.2% |
| 3Q16 | 16,668 | -11.6% |
| 2Q16 | 19,114 | +20.1% |
| 1Q16 | 17,219 | +17.7% |
| 4Q15 | 16,102 | -252.1% |
| 3Q15 | 18,854 | +27.5% |
| 2Q15 | 15,910 | +136.3% |
| 1Q15 | 14,631 | +18.0% |
| 4Q14 | -10,587 | -184.8% |
| 3Q14 | 14,782 | +11.6% |
| 2Q14 | 6,732 | -41.7% |
| 1Q14 | 12,403 | +46.1% |
| 4Q13 | 12,479 | +35.1% |
| 3Q13 | 13,251 | +58.5% |
| 2Q13 | 11,547 | +48.6% |
| 1Q13 | 8,490 | -2.0% |
| 4Q12 | 9,240 | - |
| 3Q12 | 8,360 | -7.7% |
| 2Q12 | 7,771 | +14.9% |
| 1Q12 | 8,663 | - |
| 3Q11 | 9,058 | - |
| 2Q11 | 6,764 | - |