| 1 | TM-1 | 19 Feb 2001 |
| 2 | Correspondence | 07 Feb 2011 |
| 3 | Correspondence | 21 Oct 2011 |
| 4 | Correspondence | 24 Jan 2012 |
| 5 | Correspondence | 06 Jun 2012 |
| 6 | Correspondence | 22 Apr 2013 |
| 7 | Correspondence | 20 Aug 2013 |
| 8 | Correspondence | 06 Mar 2014 |
| 9 | Letters related to TLA | 14 Sep 2015 |