In the 30 years that this study now spans, we have seen some...

In the 30 years that this study now spans, we have seen some wide fluctuations in the smoking habits of American young people. We are still seeing some residual declines in smoking in the upper grades, as the lower-smoking birth cohorts make their way up the age spectrum...But, even in the upper grades a slowdown is occurring, and we believe the declines are likely to end very soon.