| Year | Appeared | A+ | A | A- | B | C | D | F | Total | Pass(%) |
| 2019 | 35 | 35 | – | – | – | – | – | – | 35 | 100% |
| 2017 | 23 | 22 | 1 | – | – | – | – | – | 23 | 100% |
| 2016 | 31 | 19 | 11 | 01 | – | – | – | – | 31 | 100% |
| 2015 | 28 | 06 | 21 | 01 | – | – | – | – | 28 | 100% |
| 2014 | 27 | 16 | 11 | – | – | – | – | – | 27 | 100% |
| 2013 | 29 | 13 | 15 | 01 | – | – | – | – | 29 | 100% |
| 2012 | 36 | 14 | 22 | – | – | – | – | – | 36 | 100% |
| 2011 | 34 | 18 | 16 | – | – | – | – | – | 34 | 100% |