Season 1 NPO 3 , 2005 Watch now Season 2 NPO 3 , 2006 Watch now Season 3 NPO 3 , 2006 Watch now Season 4 NPO 3 , 2007 Watch now Season 5 NPO 3 , 2007 Season 6 NPO 3 , 2008 Season 7 NPO 3 , 2008 Season 8 NPO 3 , 2009 Watch now Season 9 NPO 3 , 2009 - 2010 Watch now Season 10 NPO 3 , 2010 Season 11 NPO 3 , 2011 Watch now Season 12 NPO 3 , 2011 Watch now Season 13 NPO 3 , 2012 Watch now Season 14 NPO 3 , 2012 Season 15 NPO 3 , 2013 Season 16 NPO 3 , 2013 Season 17 NPO 3 , 2014 Season 18 NPO 3 , 2014 Season 19 NPO 3 , 2015 Season 20 NPO 3 , 2015 Season 21 NPO 3 , 2016 Season 25 NPO 3 , 2018