| （単位：千ドル） | 営業費用 | 前年比（％） |
|---|---|---|
| 1Q23 | 2,313 | -15.8% |
| 4Q22 | 2,197 | -26.9% |
| 3Q22 | 2,296 | -4.0% |
| 2Q22 | 2,504 | -16.6% |
| 1Q22 | 2,746 | -14.1% |
| 4Q21 | 3,004 | -7.0% |
| 3Q21 | 2,391 | +3.9% |
| 2Q21 | 3,000 | +17.5% |
| 1Q21 | 3,196 | +5.3% |
| 4Q20 | 3,231 | -2.7% |
| 3Q20 | 2,302 | -37.6% |
| 2Q20 | 2,553 | -30.3% |
| 1Q20 | 3,036 | -16.2% |
| 4Q19 | 3,320 | -7.1% |
| 3Q19 | 3,688 | +2.6% |
| 2Q19 | 3,661 | -9.8% |
| 1Q19 | 3,621 | -1.6% |
| 4Q18 | 3,572 | -6.0% |
| 3Q18 | 3,593 | +0.2% |
| 2Q18 | 4,061 | -25.9% |
| 1Q18 | 3,679 | -35.8% |
| 4Q17 | 3,800 | -38.0% |
| 3Q17 | 3,585 | -49.3% |
| 2Q17 | 5,480 | -41.4% |
| 1Q17 | 5,730 | -41.0% |
| 4Q16 | 6,130 | -33.7% |
| 3Q16 | 7,068 | -27.4% |
| 2Q16 | 9,355 | -6.8% |
| 1Q16 | 9,715 | -12.9% |
| 4Q15 | 9,247 | -19.2% |
| 3Q15 | 9,730 | -12.7% |
| 2Q15 | 10,038 | +40.5% |
| 1Q15 | 11,155 | -6.8% |
| 4Q14 | 11,442 | -7.8% |
| 3Q14 | 11,148 | -26.3% |
| 2Q14 | 7,146 | -51.4% |
| 1Q14 | 11,963 | -19.4% |
| 4Q13 | 12,407 | -32.7% |
| 3Q13 | 15,124 | -4.2% |
| 2Q13 | 14,699 | -17.9% |
| 1Q13 | 14,850 | -8.8% |
| 4Q12 | 18,437 | -24.8% |
| 3Q12 | 15,795 | -16.5% |
| 2Q12 | 17,907 | -8.6% |
| 1Q12 | 16,283 | - |
| 4Q11 | 24,531 | - |
| 3Q11 | 18,923 | - |
| 2Q11 | 19,596 | - |