§ Mr. McNamaraasked the Secretary of State for Northern Ireland what is the size of the present prison population in Northern Ireland divided into terrorist type offenders and other offenders categorised by age and by sex in the following groups; under 18 years olds, 18–25 years, 25 to 30 years, 30 to 40 years, 40 to 50 years, 50 to 60 years and over 60 years; and if he will give a breakdown of the length of sentence being served by each age group.