The pie charts provide data about various types of waste disposed of in a country from 1960 to 2011.
Overall, the proportion of food, wood, plastic and metal increased at the expense of a decline in the percentage of textiles, paper and unspecified wastes. Additionally, green waste and glass remained unchanged across the period, while the paper accounted for the biggest share of waste disposal over the period and the opposite was true for glass.
In 1960, paper and textiles had the highest figures, with their respective figures standing at 25% and 17%. Next came food and unknown wastes, whose figures started at 12% each, followed closely by the percentage of green waste(9%), metal(8%) and plastic(8%). Lastly, the proportion of glass and wood exhibited the lowest figures at 5% and 4%, respectively.
By 2011, the proportions in the chart had shifted considerably. The percentage of paper and textiles declined dramatically to 15% and 11%, in turn. Miscellaneous categories saw its percentage drop noticeably to a mere 4%. The figures of food and plastic skyrocketed to 21% and 18%, respectively, whereas upward trends were witnessed in the proportions of wood and metal, with the former shooting up to 8% and the latter reaching 9% at the end of the period. Finally, the percentage of green waste and glass remained untouched, sharing the respective figures of 9% and 5% in 2011.