Detailed definition: 'Age' refers to the age of a person (or subject) of interest at last birthday (or relative to a specified, well-defined reference date). Values (English): Total - Age 0 to 14 years 15 years and over 15 to 24 years 25 to 54 years 25 to 34 years 35 to 44 years 45 to 54 years 55 to 64 years 65 years and over 65 to 74 years 75 years and over