Detainees at CIC having served / currently serving criminal sentences

Currently waiting for a response from Immigration Department, they should respond promptly and normally no later than (details).

Dear Immigration Department,

I am writing to make a data access request about the number of detainees at Castle Peak Bay Immigration Centre who have served sentences for criminal offences or are currently serving sentences. May I know, in each of the years between 2018-20:

a) the number of detainees admitted in each year and of those how many have served sentences for criminal offences or are currently serving sentences.

b) the detainee population on 31 December of each year and of those how many have served sentences for criminal offences or are currently serving sentences.

If a CSV or Excel format is possible, I would greatly appreciate it. Otherwise PDF or similar would be fine as well.

Yours faithfully,

Surabhi Chopra