The pie charts compare the proportion of five types of fish purchased from 1950 and 1985. Overall, animal meal became more popular than was, while fresh and cured fish fell out of favor. Additionally, the sales of frozen fish could compete with cured fish in 1985.
Looking first at the percentege of fresh fish, that spotted half of sells, comprising 50% in 1950, but later decreased to 20%. The cured fish, that stood after, had 33% of sellings, before falling to 13% in 1985. These two sort of fishes lost their popularity.
Turning to the sorts of fishes that got their market share after few decades, canned fish from 6% could climbing to 22%. While the figure for animal meal, increased merginally from 10% to 32% after three decades and took first place leaft behind fresh fish. Finally, frozen fish despite increasing to 13% of selling, devided the last place with cured fish.