Season 1 ZDF , 1996 - 1997 Season 2 ZDF , 1997 - 1998 Season 3 ZDF , 1998 - 1999 Season 4 ZDF , 1999 - 2000 Season 5 ZDF , 2001 Season 6 ZDF , 2002 Season 7 ZDF , 2003 Season 8 ZDF , 2004 Season 9 ZDF , 2005 - 2006