3 20 | | | | | 50 | | | | | 2012 50 | | 2017 10.6% | QQ | | | 2017 55 | 5000 2015 1263 50 | | | | 90.6% 9.4% | | | | 75.8% | | | | 50 | | 7 | | 5 | | | | | | |