Thought I'd do this just for the fun of it. I've made a list of how many bonus stickers there were in the ANS run and beyond. Here they are, from most to least:
*14: ANS10 and ANS11
*12: 2014 S1
*7: ANS1 and ANS2 combined (the first two in ANS1 and the last five in ANS2)
*6: ANS3, ANS4 and Flashback 1 (the third one all from the 1985 series)
*5: ANS5, ANS6, ANS7 (this one counting Senior Poligripe as a semi-official B5) and ANS8
*4: Flashback 2 (this one was also going to have 6, all from the 1991 series, but it was changed to this arrangement)
*1: ANS9
From what I think I heard someone mention in another section here (and please correct me if I'm wrong), these stickers (except for the re-releases from Flashback 1 and Flashback 2) were supposedly more adult-level humor than the base stickers because they were sold in blister packs, bonus boxes, collector boxes, etc. that the average little kid buyer either wouldn't (or couldn't) normally get.