| Month | Circular for Class I to V | Circular for Class VI to XII |
| January 2020 | Class I to V | Class VI to XII |
| December 2019 | Class I to V | Class VI to XII |
| November 2019 | Class I to V | Class VI to XII |
| October 2019 | Class I to V | Class VI to XII |
| September 2019 | Class I to V | Class VI to XII |
| August 2019 | Class I to V | Class VI to XII |
| July 2019 | Class I to V | Class VI to XII |
| May-June 2019 | Class I to V | Class VI to XII |
| April 2019 | Class I to V | Class VI to XII |