State Motor Vehicle Commission spokesman Michael Horan says 59,537 pairs had been sold.
At least 250,000 drivers are required to display the detachable decals. The decals help police enforce restrictions on first-time drivers, which limit the number of passengers they can carry and the hours they can drive.
Violators could face a $100 fine.
A few state Assembly Republicans plan to introduce a bill that would rescind the decal requirement. Opponents say the law subjects motorists to nuisance traffic stops and might entice criminals to target young drivers.