| （単位：千ドル） | 営業利益 | 前年比（％） |
|---|---|---|
| 1Q22 | 3,925 | -288.5% |
| 4Q21 | -11,903 | +30.7% |
| 3Q21 | 2,786 | -137.6% |
| 2Q21 | 3,143 | -127.5% |
| 1Q21 | -2,083 | +15.5% |
| 4Q20 | -9,108 | -593.4% |
| 3Q20 | -7,410 | -444.6% |
| 2Q20 | -11,430 | -228.6% |
| 1Q20 | -1,804 | -133.0% |
| 4Q19 | 1,845 | -38.8% |
| 3Q19 | 2,150 | -31.1% |
| 2Q19 | 8,887 | -4.2% |
| 1Q19 | 5,463 | +16.4% |
| 4Q18 | 3,014 | +6.9% |
| 3Q18 | 3,119 | +40.1% |
| 2Q18 | 9,277 | +69.8% |
| 1Q18 | 4,694 | -17.7% |
| 4Q17 | 2,819 | -3.0% |
| 3Q17 | 2,226 | -40.4% |
| 2Q17 | 5,463 | -25.3% |
| 1Q17 | 5,705 | +19.3% |
| 4Q16 | 2,908 | +10.9% |
| 3Q16 | 3,735 | +90.0% |
| 2Q16 | 7,319 | +2.0% |
| 1Q16 | 4,784 | +34.2% |
| 4Q15 | 2,623 | -525.6% |
| 3Q15 | 1,965 | -37.4% |
| 2Q15 | 7,175 | -0.6% |
| 1Q15 | 3,565 | +29.1% |
| 4Q14 | -617 | -132.5% |
| 3Q14 | 3,141 | +34.5% |
| 2Q14 | 7,219 | +45.4% |
| 1Q14 | 2,760 | +46.6% |
| 4Q13 | 1,893 | -10.0% |
| 3Q13 | 2,335 | +6.5% |
| 2Q13 | 4,965 | +5.6% |
| 1Q13 | 1,883 | +44.2% |
| 4Q12 | 2,103 | - |
| 3Q12 | 2,193 | +166.2% |
| 2Q12 | 4,701 | +24.4% |
| 1Q12 | 1,306 | - |
| 3Q11 | 823 | - |
| 2Q11 | 3,778 | - |