I knew a 24yrs old girl when I was 27. She said one time that only 5% of women masturbate and the other 95% are liars. It was her way of saying she masturbates and she said she does it twice a day, sometimes two in short succession in the morning and a longer spell in the evening where she might have a few orgasms. More experience now and all the women I knew said they masturbate. Some only ever use their fingers whilst some us toys. Their ages ranged from 24 to 65. The only one who doesn't masturbate and has said openly on a couple of occasions with friends, is my current SO