| | | | | 10%-20% 45%-50% | 1. | | | | | | | 2. | | | | | | 15%－20% | 50% | 70% 20% | 1000 / 4000 15 ~ 20 / | 17% 1000 50 ~ 75 / 25% | 8000 6 ~ 9 / 50 ~ 75 7 ~ 10 | 1 2 ~ 3 |