Child Sexual Exploitation and Abuse (CSEA)

I am currently looking to gather data globally for child sexual exploitation and abuse (CSEA) for a scoping review.
Police / surveillance data that is published annually (or somewhat regularly) that contains data on CSEA (anyone at or under age 17), both online and / or otherwise, specifically:

Request 1
The criteria for reporting CSEA-related crimes in your country.

Request 2
The most recent CSEA-related prevalence rates / number of cases reported in Northern Ireland.