| （単位：千ドル） | 純有利子負債 | 前年比（％） |
|---|---|---|
| 4Q21 | -133,581 | -25.0% |
| 3Q21 | -128,440 | -21.0% |
| 2Q21 | -153,545 | +28.2% |
| 1Q21 | -149,310 | +24.3% |
| 4Q20 | -178,121 | +44.2% |
| 3Q20 | -162,556 | +73.9% |
| 2Q20 | -119,771 | +33.4% |
| 1Q20 | -120,166 | +56.0% |
| 4Q19 | -123,481 | +156.4% |
| 3Q19 | -93,494 | +74.1% |
| 2Q19 | -89,793 | +32.9% |
| 1Q19 | -77,031 | +8.4% |
| 4Q18 | -48,154 | -48.3% |
| 3Q18 | -53,693 | -37.5% |
| 2Q18 | -67,562 | -36.5% |
| 1Q18 | -71,088 | -23.9% |
| 4Q17 | -93,188 | -2.2% |
| 3Q17 | -85,848 | -1.3% |
| 2Q17 | -106,342 | +93.5% |
| 1Q17 | -93,456 | - |
| 4Q16 | -95,320 | - |
| 3Q16 | -86,951 | - |
| 2Q16 | -54,958 | - |