| （単位：千ドル） | 減価償却費 | 前年比（％） |
|---|---|---|
| 4Q20 | 26,300 | -4.4% |
| 3Q20 | 26,200 | -4.4% |
| 2Q20 | 26,200 | -3.0% |
| 1Q20 | 26,400 | -6.4% |
| 4Q19 | 27,500 | -6.1% |
| 3Q19 | 27,400 | -7.4% |
| 2Q19 | 27,000 | -8.5% |
| 1Q19 | 28,200 | -5.1% |
| 4Q18 | 29,300 | +21.1% |
| 3Q18 | 29,600 | -39.1% |
| 2Q18 | 29,500 | -27.9% |
| 1Q18 | 29,700 | -27.7% |
| 4Q17 | 24,200 | -45.0% |
| 3Q17 | 48,600 | +9.2% |
| 2Q17 | 40,900 | -6.6% |
| 1Q17 | 41,100 | +5.9% |
| 4Q16 | 44,000 | +15.8% |
| 3Q16 | 44,500 | +23.6% |
| 2Q16 | 43,800 | +21.7% |
| 1Q16 | 38,800 | +9.6% |
| 4Q15 | 38,000 | +1.1% |
| 3Q15 | 36,000 | +1.7% |
| 2Q15 | 36,000 | +1.7% |
| 1Q15 | 35,400 | +17.2% |
| 4Q14 | 37,600 | +27.0% |
| 3Q14 | 35,400 | +20.4% |
| 2Q14 | 35,400 | +20.0% |
| 1Q14 | 30,200 | +3.1% |
| 4Q13 | 29,600 | +6.3% |
| 3Q13 | 29,400 | +6.2% |
| 2Q13 | 29,500 | +26.6% |
| 1Q13 | 29,300 | +49.3% |
| 4Q12 | 27,841 | +43.8% |
| 3Q12 | 27,696 | +88.7% |
| 2Q12 | 23,301 | - |
| 1Q12 | 19,624 | - |
| 4Q11 | 19,365 | - |
| 3Q11 | 14,680 | - |