 Declines in daily smoking prevalence occurred for both sexes and all age groups over the entire 17-year time span, although youth smoking did not start significantly declining until the mid-1990s.Overall, for daily cigarette consumption, smokers by 2001 had a significantly lower proportion of smoking 26 or more cigarettes daily compared with 1985 (14.0% to 5.8%).Most of the declines in the different sex or age groups occurred after 1991.