( KTRS ) Recent Illinois gun sales are breaking state records.

Illinois State Police did 418,000 background checks on firearm purchasers in 2015 compared with 162,000 a decade earlier. State background checks for December hit a record high for any month at 60,000. The state’s single-day record was broken on November 27th, Black Friday, when background checks topped 5,000.

The actual number of guns sold could be higher, because some transactions involve multiple guns.

Federal investigators say gun sales have also increased nationally.