| | | | | | | | | 4.5 | 20 | 11%~18% | | 5 | 15 | | 25% | | | | | 2 40 50 60 | 10 | | | | 15% | 13% 15% | 12% | 10 | | 39% 11% | 20% | 18% | | | | | | | | | |