All Available Season All Season Specials Nov, 2011 6 episodes 0.0 Season 1 Jan, 2011 6 episodes 8.5 Season 2 Jan, 2012 10 episodes 8.6 Season 3 Dec, 2012 11 episodes 8.4 Season 4 Feb, 2014 10 episodes 7.9 Season 5 Jan, 2015 10 episodes 8.6 Season 6 Jan, 2016 10 episodes 5.4 Season 7 Jan, 2017 10 episodes 6.7 Season 8 Jan, 2018 10 episodes 5.5
