How much songs did Ringo sings of the beatles songs?

Off the top of my head, I can name all 11 Beatles songs that Ringo sang lead. They are:

• Boys
• I Wanna Be Your Man
• Matchbox
• Honey Don't
• Act Naturally
• What Goes On (co-written by Ringo)
• Yellow Submarine
• With A Little Help From My Friends
• Don't Pass Me By (the first song he wrote)
• Good Night
• Octopus's Garden (written by Starr)

He also sang backing vocals on many other songs. All four Beatles are also credited for three songs ("Flying", "Dig It" and "Maggie Mae")