In a national health survey, 10% of high schoolers reported smoking marijuana at least once in the last 30 days.
In 1997, 21% of high schoolers said that they had smoked a cigarette or cigar
on one or more days in the last 30 days. By 2013 however only 7% said that they had smoked a cigarette or cigar on one or more days in the last 30 days, representing a remarkable 64%
decrease.
In 1997 only 4% of students said they had used marijuana...
