12 31 | | | | | | | | | | | | | | | | | 2019 3 | | | | | | | 7 | | | | | 2018 | | 30 | 18 3 | 9 | 2019 8 | | 2019 9 | 2020 3 6 10 | | | | | 2020 | | | | | | |