The three charts represent the preferred sports in French secondary schools in 1990, 2000 and 2010.
The different pie charts have figures given in percentage, the sports that are played the most are tennis, swimming, basketball, football and finally there is a category called other. When some of them had their popularity divided by two like football others like swimming
remained the most popular.
First of all we can see that between 1990 and the year 2000 football heavily remained at the same level from 16% to 18% but basketball severely dropped from 16% to 7%. A similar drop happened to football but between 2000 and 2010, going from 18% to 8%, whereas basketball rose sharply from 7% to 25%.
Second of all we can see that trough these 20 years swimming barely moved from 39% to 48% wrapping up this period at 41%. Another sport that did something similar is tennis with no evolution from 1990 to 2000 staying at 4% but a small rise occurred reaching 7% in 2010.