| （単位：千ドル） | 減価償却費 | 前年比（％） |
|---|---|---|
| 4Q23 | 3,491 | -14.4% |
| 3Q23 | 3,351 | -16.8% |
| 2Q23 | 3,237 | -26.5% |
| 1Q23 | 4,031 | -8.1% |
| 4Q22 | 4,078 | -16.4% |
| 3Q22 | 4,028 | -1.8% |
| 2Q22 | 4,404 | +5.9% |
| 1Q22 | 4,388 | +34.3% |
| 4Q21 | 4,876 | +96.4% |
| 3Q21 | 4,102 | +65.6% |
| 2Q21 | 4,160 | +4.3% |
| 1Q21 | 3,267 | -45.3% |
| 4Q20 | 2,482 | -58.5% |
| 3Q20 | 2,477 | -58.4% |
| 2Q20 | 3,988 | -32.7% |
| 1Q20 | 5,975 | +0.5% |
| 4Q19 | 5,979 | -7.0% |
| 3Q19 | 5,958 | -10.3% |
| 2Q19 | 5,926 | -10.8% |
| 1Q19 | 5,943 | -10.5% |
| 4Q18 | 6,432 | +1.2% |
| 3Q18 | 6,643 | +3.8% |
| 2Q18 | 6,643 | +2.6% |
| 1Q18 | 6,642 | +2.6% |
| 4Q17 | 6,358 | +2.3% |
| 3Q17 | 6,400 | +3.5% |
| 2Q17 | 6,474 | +4.4% |
| 1Q17 | 6,474 | +8.9% |
| 4Q16 | 6,213 | +5.2% |
| 3Q16 | 6,184 | -5.4% |
| 2Q16 | 6,204 | +63.7% |
| 1Q16 | 5,945 | +34.3% |
| 4Q15 | 5,904 | - |
| 3Q15 | 6,541 | - |
| 2Q15 | 3,789 | - |
| 1Q15 | 4,426 | - |