The pie chart gives data on the disposal of various types of waste in a certain county in the years 1960 and 2011.
Overall, the disposal of all types of waste experienced an upward trend, with the exception of paper, textiles and Other waste types, which witnessed an opposite trend, while green waste and glass levels remained stable. Additionally, paper and food waste were disposed of more than other types.
Looking into more details, 12% of waste belonged to food products in the first year, prior to soaring to roughly a fifth (21%) in 2011, surpassing all other types of waste. In terms of disposal of plastic and metal waste, they comprise the same percentage, with 8% in 1960, which was followed by a dramatic shift of 10% for plastic and a slight increase of 1% for metal waste in 2011. Moreover, there was a twofold increase in the disposal of wood waste, from 4% to 8%, between 1960 and 2011.
Furthermore, paper and textile waste were disposed of at 25% and 17%, respectively, in the initial year. Despite taking the lead with big disposal at the beginning of the period, they plummeted by 10% and 6%, respectively, in 2011. The percentage of Other waste made up just over one in ten (12%) in 1960, after which it saw a gradual fall of 8% in 2011. Turning to the remaining two types of waste, in the previous year, glass and green waste disposal accounted for 9% and 5%, respectively, which leveled off until the end of the period.