| 生産 | 出荷 | 在庫 | ||
| 1998 | I | 102.2 | 103.1 | 108.0 |
| II | 97.6 | 98.9 | 105.8 | |
| III | 97.8 | 99.0 | 103.5 | |
| IV | 96.7 | 98.5 | 99.7 | |
| 1999 | I | 98.2 | 100.2 | 97.8 |
| II | 97.8 | 99.1 | 96.1 | |
| III | 100.4 | 102.1 | 95.0 | |
| IV | 101.8 | 104.1 | 93.4 | |
| 2000 | I | 102.6 | 104.6 | 95.6 |
| II | 104.3 | 106.5 | 95.5 | |
| III | 106.0 | 108.2 | 94.7 | |
| IV | 106.4 | 108.2 | 95.5 | |
| 2000 | 8 | 108.4 | 110.9 | 95.7 |
| 9 | 104.7 | 106.9 | 94.7 | |
| 10 | 106.3 | 107.9 | 96.1 | |
| 11 | 105.5 | 107.5 | 95.6 | |
| 12 | 107.4 | 109.3 | 95.5 | |
| 2001 | 1 | 102.9 | 105.3 | 95.9 |
| p2 | 103.3 | 106.0 | 96.6 | |