Being Canadian 12 months is the minimum age a child must be to attend daycares. It would be very difficult if not impossible to find one licensed for children younger. My children both started at 12 months my daughter had a way more difficult time than my son but that us their personalities and has stayed consistent through the years.
I also teach in an ECE setting so I see all the 1 year olds entering and it honestly depends on the child.
I rarely see older children Entering the program as most of our children attend from age 1 until they start school.