| Year | Number of students in the cohort | Number of students participating | Percentage of students from each year |
| 2015/2016 | 178 | N = 9 | 5% |
| 2016/2017 | 194 | N = 25 | 12% |
| 2017/2018 | 177 | N = 6 | 3% |
| 2018/2019 | 176 | N = 10 | 5% |