As of the end of December 2021, some 30,451 people were registered with ROFUS, up from 26,115 at the same point in 2020.
Since the scheme launched in 2012, Spillemyndigheden said about 4,000 people were signing up to self-exclude from gambling every year.
The 20-29 age group made up the bulk of those on the list (30%), just ahead of the 30-39 bracket with 28%.
In comparison, just 8% of all those included were above the age of 60. Six per cent were in the 60-69 age group, split evenly between men and women, and 2% were aged 70-79, again an even split.
The regulator also noted that the majority of people registering with ROFUS are men, with 76% of all those on the list being male and 24% female.
Younger men in particular made use of ROFUS, with 26% of registrants being male and in the 20-29 age group, while 22% were men aged between 30 and 39.
A further 4% of men signed up to ROFUS were under the age of 20.