Sweden’s regulated online gambling market posted higher revenue in its first year, although even the local gambling regulator isn’t sure how big those gains might have been.

Figures released Thursday by Sweden’s Spelinspektionen regulatory body show locally licensed gambling operators generated revenue of just under SEK24.8b (US$2.63b) in 2019, with the final quarter turning in the year’s highest quarterly total at SEK6.65b. The figures are only preliminary and are largely based on Swedish Tax Agency data.

The 2019 total represents a rise of around SEK1.4b from 2018’s total, and Spelinspektionen said it at least appears that Swedish market sales “increased significantly” last year. However, the regulator cautioned that the gains could reflect the fact that it may have underestimated internationally licensed online gambling operators’ revenue in previous years.

The catch-all category of Swedish-licensed online gambling operators and casino cruises accounted for just over SEK14b of 2019’s total. As with the overall figure, the online category had its best quarter in Q4 at SEK3.65b.