In thousands (6,061 represents 6,061,000). For the United Kingdom in 1981, children are defined as those under 15 and those who are 15, 16, or 17 and attended school full-time; for later years, children are defined as those under 16 and those who are 16 or 17 and attend school full-time. For Ireland, children are defined as those under 15. For Germany for 1995 and afterward, children are of all ages. For Germany in 1991, and for all other countries, children are defined as children living at home, or away at school, under the age of 18.

(Data are generally for the entire year, but in some instances they are only for a particular month within the year)