City officials did not say what the frequency of use was among the 600,000 regular cocaine users.

There are five to six million cocaine users in the country.

"The cocaine user thinks he can get away with things other people cannot."

Specialists in child abuse say far too little research is being done on the children of cocaine users.

But cases among cocaine users 12 to 17 years old declined, the data showed.

The committee report puts the number of heavy cocaine users at 2.4 million, while the institute reported only 662,000.

One in seven cocaine users, the program finds, makes more than $50,000 a year.

In a study of cocaine users, the average time taken to reach peak subjective effects was 14.6 minutes.

Some cocaine users also report having similar symptoms to schizophrenia patients and feel that their mind is lost.

Young men aged 18 to 25 are the biggest cocaine users, with 8% using it in the previous 12 months.