| | 2021 3 4 | | | | | | | | | | 2021 | | | | | 4 | | 1 | 2021 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ○ | | | | | | ○ | | | | | | | | | | | | | | | | 2021 | | | 20 % | 2021 | 10 | 8 | | | ○ | | | | 8 | 8 | | | | | 8 | 2021 | | | 2021 | | | | | | | | | | 1 2 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 2020 3 8 |