Season 1 ZDF , 2005 - 2007 Season 2 ZDF , 2007 Season 3 ZDF , 2009 Season 4 ZDF , 2010 Season 5 ZDF , 2011 Season 6 ZDF , 2011 Season 7 ZDF , 2012 Season 8 ZDF , 2013 Season 9 ZDF , 2014 Season 10 ZDF , 2015 Season 11 ZDF , 2016 Season 12 ZDF , 2017 Season 13 ZDF , 2018 Season 14 ZDF , 2019 Season 15 ZDF , 2020 Watch now Season 16 ZDF , 2021 Watch now Season 17 ZDF , 2022 Watch now Season 18 ZDF , 2023
, 2005 - 2007
