And actually if you look better, there is a pairing 3 years separated. All because of which #7 songs were retained.
1 1960 Theme from A Summer Place Percy Faith
3 1960 Cathys Clown The Everly Brothers
2 1960 Hell Have to Go Jim Reeves
4 1960 Running Bear Johnny Preston
6 1961 My True Story The Jive Five
4 1961 Crying Roy Orbison
2 1961 I Fall to Pieces Patsy Cline
4 1962 Roses Are Red (My Love) Bobby Vinton
1 1962 Stranger on the Shore Acker Bilk
2 1962 I Cant Stop Loving You Ray Charles
1 1963 Surfin U.S.A. The Beach Boys
4 1963 Hes So Fine The Chiffons
2 1963 The End of the World Skeeter Davis
1 1964 I Want to Hold Your Hand The Beatles
5 1964 I Get Around The Beach Boys
4 1964 Oh, Pretty Woman Roy Orbison
7 1965 Help! The Beatles
3 1965 (I Cant Get No) Satisfaction The Rolling Stones
6 1965 Downtown Petula Clark
7 1966 Monday, Monday The Mamas & the Papas
6 1966 Last Train to Clarksville The Monkees
3 1966 (Youre My) Soul and Inspiration The Righteous Brothers
4 1969 Honky Tonk Women The Rolling Stones
1 1967 To Sir With Love Lulu
3 1967 Ode to Billie Joe Bobbie Gentry
5 1967 Im a Believer The Monkees
6 1968 Sunshine of Your Love Cream
4 1968 (Sittin On) The Dock of the Bay Otis Redding
2 1968 Love is Blue Paul Mauriat
5 1969 Everyday People Sly and the F4mily Stone
1 1969 Sugar, Sugar The Archies
2 1969 Aquarius/Let the Sunshine In The 5th Dimension