Last Pick Again

For the past week or so i've gotten an extremely high amount of last picks. At first I thought it was kind of comical, because I thought it was just one of those random streaks of bad luck. Today I've played about 10 ranked games and 9 of them i have been last pick, minus one where I was second to last. Is this Riot's way of punishing me for something? I'm not a very toxic player or anything so I have no idea what could be causing this. At this point it is beyond bad luck. Anyone have any ideas?