§ Rev. Martin Smyth
To ask the Secretary of State for Northern Ireland if he will list for each year since 1968 the number of murders recorded in Northern Ireland which have been cleared up and how many remain under investigation; how many people have been convicted in connection with these murders; how many have been convicted of murder and how many convicted of a lesser offence; and how many convicted of murder have subsequently been released. 
§ Sir John Wheeler
This information is not available in the form requested and to obtain it would incur disproportionate cost.
The Chief Constable's annual reports provide details of offences—including murder—the number cleared and persons proceeded against and convicted. The reports from 1970 are held in the House of Commons Library.