The chart illustrates the selling percentage of sorts of magazines in a company in 1975, 1995, and 2015.
Overall, the proportion of kinds of magazines witnessed a downtrend during three time periods, except for sports magazines, which are the best-selling among all sectors.
The percentage of sports magazines experienced a steady increase from 32% in 1975 to 36% in 1995 and finally peaked at 42% in 2015. Meanwhile, during the same period, the percentage of the fashion sector saw a plummet decrease, from 22% to 16% between 1975 and 1995, and finally hit bottom at only 5% in 2015.
In 1975, the food magazines witnessed noticeable changes. The percentage of this sector doubled from 10% to 22% in 1995, then returned to the initial figure after 20 years. The other sector also has the same trend as the food magazines because of increasing from 26% to 32% between 1975 and 1995 and again reducing to the original percentage 20 years later. In 1975, demand for the health sector decreased by 6%, making up 20% in 1975, and this figure remained unchanged 20 years later.