| （単位：千ドル） | 純有利子負債 | 前年比（％） |
|---|---|---|
| 4Q20 | -11,703 | -87.2% |
| 3Q20 | -7,212 | -91.5% |
| 2Q20 | -21,221 | -74.6% |
| 1Q20 | -53,922 | -17.3% |
| 4Q19 | -91,255 | -12.1% |
| 3Q19 | -84,445 | -27.2% |
| 2Q19 | -83,475 | -23.2% |
| 1Q19 | -65,234 | -46.0% |
| 4Q18 | -103,837 | -22.1% |
| 3Q18 | -115,990 | -12.0% |
| 2Q18 | -108,665 | -17.6% |
| 1Q18 | -120,712 | -26.2% |
| 4Q17 | -133,368 | -24.8% |
| 3Q17 | -131,862 | -30.7% |
| 2Q17 | -131,908 | -34.0% |
| 1Q17 | -163,655 | -29.1% |
| 4Q16 | -177,443 | - |
| 3Q16 | -190,298 | - |
| 2Q16 | -199,785 | - |
| 1Q16 | -230,966 | - |