Cocaine-related emergency-room admissions, overdoses and requests for rehab have declined since the economy started its 2008 decline, according to data obtained by The Post.

“It is sort of on a slight but steady downward trend,” said Dr. Stephen Ross, director of NYU’s Langone Center of Excellence on Addiction. “I treat patients in private practice. Many cocaine addicts tell me stories they don’t have enough money to buy it anymore.”

There were 478 “accidental” deaths in which cocaine was a factor, typically overdoses, in New York City in 2006, according to the Office of the Chief Medical Examiner.