| 1. | 45 | 3 ~7 | 20 25 | | | | 2. 17~25 4 0 | 4 8 | | | 3. | 30% | | 12% 50% | | 20% 25% | | 45% | 4. 1% | 2.5% | 2.5% 4% | 2.5% | 3.5% 100 | 3 4 5 | 8 12 | 20% 11 12 | 5. | | | |