The graph illustrates the changes of different kinds of household waste that were recycled in one city from 1992 to 2002.
It is noticeable that canes, paper, and glass were the highest percentage of household waste recycled in 2002, while plastic was the same rate between 1997 and 2002 .All materials without canes were the smallest proportion in the first year; however, recycled canes was the largest number in 1997.
In detail, plastic was more than 10% in 1992, followed by a slow incline. In contrast, canes had decreased to 5% by 1997. After declining steadily, the number of recycled beans started to increase significantly until 2002. Paper and glass have been growing for all these years. In 1992, these materials had the same rate – approximately 15%. Plastic was as common as canes. In other words, they had nearly one-third of the total percentage of household waste in 1997. Glass was far more than plastic in the next years. The difference between them was around 10 percent.
