To ask the Scottish Executive how many young people aged (a) 5 and under, (b) 6 to 8, (c) 9, (d) 10, (e) 11, (f) 12, (g) 13, (h) 14, (i) 15 and (j) 16 are undergoing rehabilitation as a result of (i) drug or (ii) alcohol abuse, broken down by local authority area.