Here's a list of dates I've received them this year: 9th Nov 5th Nov 8th Oct 3rd Oct 14 Sept 21 Aug 11 Jul 29 Jun 1 Jun 29 May 19 May 12 May 27 Apr 17 Apr 14 Apr 24 Feb 18 Feb 16 Feb 16 Feb
I believe this correlates exactly with the number of times I've posted unlocked posts, but you can check that for yourself if you feel like it.
no subject
9th Nov
5th Nov
8th Oct
3rd Oct
14 Sept
21 Aug
11 Jul
29 Jun
1 Jun
29 May
19 May
12 May
27 Apr
17 Apr
14 Apr
24 Feb
18 Feb
16 Feb
16 Feb
I believe this correlates exactly with the number of times I've posted unlocked posts, but you can check that for yourself if you feel like it.