2014(%) | 2015(%) | 2016(%) | 2017(%) | 2018(%) | |
---|---|---|---|---|---|
A/A* | 20.00 | 15.15 | 20.51 | 31.18 | 32.14 |
B | 26.67 | 27.27 | 43.59 | 15.05 | 20.24 |
C | 23.33 | 36.36 | 26.92 | 30.11 | 17.86 |
Others | 30.00 | 21.21 | 10.26 | 23.66 | 29.76 |
Total | 100.00 | 100.00 | 101.28 | 100.00 | 100.00 |