| Month | Number of messages |
|---|---|
| 2015 August | 10 |
| 2015 July | 5 |
| 2014 October | 12 |
| 2014 September | 15 |
| 2014 June | 4 |
| 2014 April | 3 |
| 2014 February | 1 |
| 2012 October | 57 |
| 2012 September | 1 |
| 2012 August | 1 |
| 2012 May | 2 |
| 2012 February | 1 |
| 2012 January | 1 |
| 2011 November | 2 |
| 2011 September | 9 |
| 2011 August | 38 |
| 2011 April | 2 |
| 2010 November | 6 |
| 2010 October | 13 |
| 2010 August | 2 |
| 2010 July | 1 |
| 2010 April | 16 |
| 2010 February | 2 |
| 2010 January | 6 |
| 2009 November | 1 |
| 2009 October | 4 |
| 2009 August | 2 |
| 2009 June | 9 |
| 2009 April | 49 |
| 2009 March | 8 |
| 2009 February | 33 |
| 2009 January | 11 |
| 2008 November | 55 |
| 2008 October | 21 |
| 2008 September | 3 |