The table illustrates the proportion of smokers of males and females between the age of 15 and 20 in Britain from 1970 to 2000. Overall, the proportion of males was doubled of females at first, the rapidly grown of females smoking’s rate until exceed rates of males smokers in the late years.
In 1970, the smoker rate of males was 10%, twice proportion compared to females in the same year. The percentage of smoking males dramatically increased to its peak on 1990 at 36%, before it steadily dropped to the lowest point at 28% on 2000.
In contrast, females smokers recorded as lower than males with 5% in 1970, while the growth rate enormously increased every years then, until surpassed the males at 37% in 1990, before entered downward trend in later years.
In summary, both groups were on the upward trend before hit the top at 37%, then steadily decreased.