Almost 7,000 people have reportedly applied to join the National Adoption Contact Preference Register since it was set up in 2005.
The register was established to help adopted children and their natural parents or relatives to get in contact with each other.
Reports this morning say more than 70% of the applications received so far have come from adopted people.
Matches between adopted people and their natural parents were made in 249 cases.
This morning's reports say an information helpline set by the Adoption Board to coincide with the launch of the register received around 7,000 calls in its first year of operation, and is still receiving 20-30 calls every week.