According to the NPR blog:
a report released by the FAA says that there were 2,836 reported cases in 2010, almost double the 2009 number and the most since the report was first published in 2005.
And the airport with the worst number of offenses? LAX.
>> Link: Lasers Light Up Aircraft Over 2,800 Times In 2010 : The Two-Way : NPR
