Sixty-four million vehicles in the U.S. were recalled last year, a figure that amounted to more than double the previous record set in 2004, according to the NHTSA.

In total, the NHTSA reported 803 automotive recalls in 2014, covering 63.9 million vehicles. In 2004, 30.8 million vehicles were recalled.

“These figures demonstrate the need for vigorous, effective oversight to remove safety defects from our highways,” NHTSA Administrator Mark Rosekind said in a statement.

According to Bloomberg Business, Rosekind said last month that 2015 may see an even greater number of recalls as regulators ratchet up the pressure on automakers to more quickly disclose and fix defects. NHTSA also said in its report that about 3.5 million cars and trucks have been recalled so far this year.