this graph shows the proportion of four different materials that were recycled from 1982 to 2010 in a particular country

The given line chart demonstrates the proportion of recycling materials including paper and cardboard, glass containers, aluminium cans, and plastics over the 20 years from 1982 to 2010. Overall, the rate of recycling methods in glass containers and aluminium cans showed an upward trajectory while plastic and paper were still the same and presented a downward trend. To begin with, the figures of paper and glass recycles started at 65 and 50 respectively. The rates of recycling paper and cardboard presented a little fluctuation during the first 12 years before keeping decreased to 70% in 2010. However, the percentage of glass recycles also fell by 10% in 1990 before constantly rising to 60 at the end of period. Regarding aluminium cans and plastic materials, there was a beginning of recycling aluminium cans in 1996, starting at less than 10%. Then, the proportion considerably leaped to approximately 45 in 2010, which was considered as a popular trend of bringing aluminium cans to use again. Additionally, recycling plastics began at the least number in 1990 and remained unchanged trend through 20 years.