| 13~18 | | | | | | 0.6 | ~ 0.65 | 0.5 | | 1 ~ 1.3 | | | | ︵ ︶ 13 ~ 15 | 26 ~ 30 16 ~ 18 30 ~ 35 | | | | | | | | 1 1 | 0.5 | 1. 40% 26% 28% | 2% 1% 3%︔ 2. 33.7% | 25.3 % 26% 7.5% 3 % | 2.5% 2%︔ | 18 ~ 24 | | | | | | | | 2 ~ 3 | |