The two diagrams compare the proportions of various kinds of waste thrown away by residents in one nation between 1960 and 2011.
Overall, individuals were likely to get rid of a larger portion of metal, plastic, wood and food, while a smaller amount of paper, textiles and other types of waste was disposed throughout the period. Additionally, the amount of green and glass disposal remained stable in two examined years.
Looking at the details, inhabitants disposed of the same portion of metal and plastic garbage, at 8% of the total waste in 1960. After that, the former saw a slight rise in its percentage by only 1% in 2011, whereas the figure for the latter experienced a sharper increase by 10% in the same period. The proportion of wood rubbish doubled from 4% to 8% after more than 50 years. Noticeably, comprised 12% in 1960, the figure for food jumped to around one fifth of the total in 2011, making it the most common type of waste.
Regarding remaining waste disposal categories, the majority of waste that individuals got rid of in 1960 was paper, at exactly one fourth of the total. Over a 51-year period, its figure witnessed a significant decrease by 10% to 15%, making it the third kind of waste people disposed of most frequently. A similar trend was seen in the figure for textiles, dropping from 17% to 11% in the surveyed period. It is noticeable that the percentage of unnamed waste declined threefold, ending with merely 4% by the end of the period. Meanwhile, residents consistently threw away the same portion of green waste and glass waste over the examined years, at 9% and 5%, respectively.