OK here goes....I'm using a book here to help me!
Obviously some years carried much mroe dramatic storylines than others, those I feel to have been particularly important are in bold print.
1960 - Death of May Hardman (the first Street death)
1961 - Death of Ida Barlow (Ken's mam),
1962 - Ken's wedding to Valerie Tatlock (Peter Barlow's mother), kidnapping of baby Christopher Hewitt
1963 - Sheila Birtles' suicide bid (wasn't as graphic as had first been planned)
1964 - Martha Longhurst's death, the arrival of the Ogdens
1965 - Birth of twins Peter & Susan Barlow
1966 - Ken's affair with Jackie Marsh
1967 - Coronation Street Train Crash, Elsie Tanner's marriage to american Steve Tanner
1968 - Demolition of Ena Sharples' "Mission of Glad Tidings Hall", murder of Steve Tanner
1969 - Coach Crash, involving most of the residents - first colour episode
1970 - Death of Joe Donnelli (after taking Irma & Stan Ogden and Minne Caldwell hostage in Number5 - Joe had killed Steve Tanner in 1968)
1971 - Death of Valerie Barlow
1972 - Emily's marriage to Ernest Bishop
1973 - (First) departure of Elsie Tanner
1974 - Revelation that Betty Turpin was the mother of Gordon Clegg, not her sister Maggie.
1975 - Warehouse Fire
1976 - The Ogdens get their first "Muriel"
1977 - Birth of Tracy Langton (Barlow)
1978 - Murder of Ernest Bishop
1979 - Gail Potter marries Brian Tilsley, Lorry crashes into the Rovers
1980 - Emily Bishop marries a bigamist, Renee Roberts is killed in a car crash
1981 - Ken marries Deirdre
1982 - Start of Deirdre's affair with Mike Baldwin
1983 - The infamous Mike/Deirdre/Ken affair, death of Len Fairclough
1984 - Final departure of Elsie Tanner, Death of Stan Ogden
1985 - Audrey marries Alf Roberts
1986 - Mike marries Ken's daughter Susan - Ken & Mike come to blows
1987 - Departure of Hilda Ogden, Birth of Sarah-Louise Platt, Gail is unsure about the paternity of her child
1988 - Build-up of Alan Bradley & Rita
1989 - Death of Alan Bradley under the wheels of a tram
1990 - Rosie Webster and David Platt born
1991- Gail & Martin Platt marry
1992 - Katie McDonald dies (Liz and Jim's baby daughter)
1993 - Lisa Duckworth run over in the Street
1994 - Deirdre Barlow takes a toy-boy - Samir Rachid
1995 - Departure of Bet Gilroy, Samir Rachid murdered (Tracy's transplant etc)
1996 - Raquel's depature
1997 - Arrival of the Battersbys, Don Brennan's suicide (and driving Alma into the Irwell)
1998 - Shannon Tattersall dies of meningitis
1999 - Death of Alf Roberts
2000- Sarah-Louise Platt becomes pregnant at 13
2001 - Death of Alma
2002 - Begginnings of Richard Hillman
2003 - Culmination of Richard Hillman
2004 - You decide!