| Grade | Total (April 2018) | Total (June 2019) | Total (April 2020) |
| Associate Member | 9 | 12 | 9 |
| Fellow | 3 | 2 | 2 |
| Graduate Student Member | 33 | 49 | 35 |
| Life Fellow | 2 | 2 | 2 |
| Life Member | 10 | 12 | 13 |
| Life Senior | 1 | 1 | 1 |
| Member | 357 | 347 | 335 |
| Senior Member | 24 | 26 | 26 |
| Student Member | 10 | 18 | 8 |
| Affilitate | 27 | 27 | 27 |