| （単位：千ドル） | 減価償却費 | 前年比（％） |
|---|---|---|
| 4Q18 | 558,000 | -2.7% |
| 3Q18 | 563,000 | +8.9% |
| 2Q18 | 571,000 | +19.4% |
| 1Q18 | 575,000 | +23.8% |
| 4Q17 | 573,500 | +21.0% |
| 3Q17 | 516,800 | +19.4% |
| 2Q17 | 478,200 | +9.9% |
| 1Q17 | 464,500 | +11.6% |
| 4Q16 | 473,800 | +11.6% |
| 3Q16 | 433,000 | +1.2% |
| 2Q16 | 435,100 | +3.7% |
| 1Q16 | 416,100 | -0.0% |
| 4Q15 | 424,500 | -1.0% |
| 3Q15 | 427,700 | -6.1% |
| 2Q15 | 419,700 | -3.5% |
| 1Q15 | 416,300 | +13.9% |
| 4Q14 | 428,700 | +72.0% |
| 3Q14 | 455,700 | +82.0% |
| 2Q14 | 434,800 | +74.5% |
| 1Q14 | 365,600 | +45.7% |
| 4Q13 | 249,300 | -2.0% |
| 3Q13 | 250,400 | +2.1% |
| 2Q13 | 249,200 | +3.7% |
| 1Q13 | 251,000 | +3.0% |
| 4Q12 | 254,400 | +3.0% |
| 3Q12 | 245,200 | +6.7% |
| 2Q12 | 240,300 | +18.6% |
| 1Q12 | 243,800 | +32.3% |
| 4Q11 | 246,900 | +29.5% |
| 3Q11 | 229,700 | +21.9% |
| 2Q11 | 202,600 | +6.0% |
| 1Q11 | 184,300 | -7.7% |
| 4Q10 | 190,600 | - |
| 3Q10 | 188,500 | - |
| 2Q10 | 191,200 | - |
| 1Q10 | 199,700 | - |