Season 1 BBC One , 1970 Season 2 BBC One , 1971 Season 3 BBC One , 1972 Season 4 BBC One , 1974 Season 5 BBC One , 1975 Season 6 BBC One , 1976 Season 7 BBC One , 1977 Season 8 BBC One , 1979 Season 9 BBC One , 1980 Season 10 BBC One , 1981 Season 11 BBC One , 1982 Season 12 BBC One , 1983 Season 13 BBC One , 1983 - 1984 Season 14 BBC One , 1984 - 1985 Season 15 BBC One , 1985 - 1986 Season 16 BBC One , 1986 - 1987 Season 17 BBC One , 1987 - 1988 Season 18 BBC One , 1988 - 1989 Season 19 BBC One , 1989 - 1990 Season 20 BBC One , 1990 - 1991 Season 21 BBC One , 1991 - 1992 Season 22 BBC One , 1992 - 1993 Season 23 BBC One , 1993 - 1994 Season 24 BBC One , 1994 - 1995 Season 25 BBC One , 1995 - 1996 Season 26 BBC One , 1996 - 1997 Season 27 BBC One , 1997 - 1998 Season 28 BBC One , 1998 - 1999 Season 29 BBC One , 1999 - 2000 Season 30 BBC One , 2000 - 2001 Season 31 BBC One , 2001 - 2002 Season 32 BBC One , 2002 - 2003 Season 33 BBC One , 2003 - 2004 Season 34 BBC One , 2004 - 2005 Season 35 BBC One , 2005 - 2006 Season 36 BBC One , 2006 - 2007 Season 37 BBC One , 2007 - 2008 Season 38 BBC One , 2008 - 2009 Season 39 BBC One , 2009 - 2010 Season 40 BBC One , 2010 - 2011 Season 41 BBC One , 2011 - 2012 Season 42 BBC One , 2012 - 2013 Season 43 BBC One , 2011 - 2014 Season 44 BBC One , 2014 - 2015 Season 45 BBC One , 2015 - 2016 Season 46 BBC One , 2016 - 2017 Season 47 BBC One , 2017 - 2018 Season 48 BBC One , 2018 - 2019 Season 49 BBC One , 2019 - 2020 Season 50 BBC One , 2020 - 2021 Season 51 BBC One , 2021 - 2022 Season 52 BBC One , 2022 - 2023
, 1970
