Season 1 NPO 1 , 2011 Season 2 NPO 1 , 2011 - 2012 Season 3 NPO 1 , 2012 - 2013 Watch now Season 4 NPO 1 , 2015 Season 5 NPO 1 , 2016 Season 6 NPO 1 , 2018 Season 7 NPO 1 , 2020