The U.S. Border Patrol arrested migrants more times in the past year than in any other fiscal year in recorded history, according to Customs and Border Protection data released Friday.

Authorities encountered unauthorized migrants along the southwest border more than 1.73 million times in budget year 2021, according to the data. Of those, about 1.66 million arrests were made by Border Patrol.

The prior record was set in 2000 at about 1.64 million, according to Border Patrol data.