To ask the Scottish Executive how many social workers provided social work services at (i) HM Prison Edinburgh, (ii) HM Young Offenders Institution Glenochil, (iii) HM Young Offenders Institution Dumfries and (iv) HM Young Offenders Institution Polmont in (a) 1998-99, (b) 1999-2000, (c) 2000-01 and (d) 2001-02 and what the ratio of social workers to prison...