| （単位：千ドル） | 減価償却費 | 前年比（％） |
|---|---|---|
| 4Q20 | 2,841 | +3.7% |
| 3Q20 | 2,816 | -0.5% |
| 2Q20 | 2,824 | -5.8% |
| 1Q20 | 2,789 | -0.1% |
| 4Q19 | 2,740 | -2.1% |
| 3Q19 | 2,830 | +6.6% |
| 2Q19 | 2,997 | +8.0% |
| 1Q19 | 2,792 | +21.7% |
| 4Q18 | 2,800 | +16.8% |
| 3Q18 | 2,654 | +46.7% |
| 2Q18 | 2,776 | +68.3% |
| 1Q18 | 2,295 | +44.5% |
| 4Q17 | 2,397 | +50.5% |
| 3Q17 | 1,809 | +3.9% |
| 2Q17 | 1,649 | - |
| 1Q17 | 1,588 | - |
| 4Q16 | 1,593 | -22.9% |
| 3Q16 | 1,741 | -8.3% |
| 4Q15 | 2,067 | +8.3% |
| 3Q15 | 1,898 | +3.3% |
| 2Q15 | 1,993 | +10.4% |
| 1Q15 | 1,917 | +8.1% |
| 4Q14 | 1,909 | +9.1% |
| 3Q14 | 1,838 | +7.3% |
| 2Q14 | 1,806 | +34.4% |
| 1Q14 | 1,773 | +33.9% |
| 4Q13 | 1,750 | +25.4% |
| 3Q13 | 1,713 | +29.7% |
| 2Q13 | 1,344 | - |
| 1Q13 | 1,324 | - |
| 4Q12 | 1,395 | - |
| 3Q12 | 1,321 | - |