4 19 | 4 19 | | | | 2000 | | | | | 7 1 | 17% 11% 6% 13% | | 13% 11% | | 2017 1 1 | 2019 12 31 | | 30 50 | | 20% | | | 2017 1 | 1 2019 12 31 | | | 50% 75% | | | 8 | | 1 1 | | 70% | | 7 1 | | | | 7 1 | | | | 2400 | | 2016 | 2019 | |