The Michigan Lottery says the number of players making use of its online site has nearly quadrupled since the product made its debut.

Michigan launched online sales in November 2014, offering both draw ticket sales and instant win games via website or mobile app. By January 2015, Michigan Lottery Bureau commissioner Scott Bowen said the site’s sales were “going well” but still represented “less than one percent of our business.”

Around 86k players registered with the site shortly after it launched. This week, the Lottery announced that the number of registered players has since swelled over 300% to 322k (about 3% of the state’s total population).

These players have generated $147m in online sales and the Lottery Bureau expects this figure to rise to $480m by the time the site is eight years old. The site currently offers around 30 instant games as well as keno.