| 2018 31 | | | | | | 40 | | | | | | 2018 | | | | | | 2018 5 | 6 | | | | | | | | | | | | 30 ％ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 70% | | | 60% | | | | | | | | | | | | | | | 4 | | | | ︹ 2018 ︺ 8 | | | | | | | | 2020 | | | | | | | | | | | | | | |