| Year | Appeared | A+ | A | A- | B | C | D | F | Total | Pass(%) |
| 2019 | 46 | 13 | 30 | 3 | – | – | – | – | 46 | 100% |
| 2018 | 46 | 19 | 25 | 2 | – | – | – | – | 46 | 100% |
| 2017 | 39 | 25 | 14 | – | – | – | – | – | 39 | 100% |
| 2016 | 30 | 07 | 21 | 02 | – | – | – | – | 30 | 100% |
| 2015 | 32 | 15 | 07 | 09 | 01 | – | – | – | 32 | 100% |
| 2014 | 28 | 11 | 17 | – | – | – | – | – | 28 | 100% |
| 2013 | 17 | 01 | 11 | 04 | 01 | – | – | – | 17 | 100% |