The illustration depicts data about the percentages of several categories of domestic disposables that went under recycle process in a single city from 1992 to 2002. The mentioned categories are ( plastic, cans, paper, and glass).
Overall, the trend shows a gradual increase in the percentages of recycled household waste. Moreover, paper and glass were the most recycled materials among the four categories throughout the period, meanwhile, plastic was the least recycled material over the years.
In 1992, Paper was the most recycled material at around 25%, followed by cans at nearly 18%, then glass at almost 15%, and plastic was the least recycled type with only 10%. In 1997, the overall recycled percentages were elevated, as follows: Paper, again, was ranked first among the different recycled types, with a slightly increased ratio of just above 30%. Glass came next with a massive growth of around 28%. Cans took third place with a slightly declined percentage to around 15%, Plastic percentages rose a bit to 12%.
In 2002, Glass substituted paper in first place, with an enormous growth to approximately 48%. Paper descended to second place, despite its significantly elevated ratio to just under 40%. Cans almost doubled up to reach about 25%, while the plastic ratio remained unchanged at 12%.