The bar chart provided compares the recycling proportions of four different kinds of waste in a small city in the years 2000, 2005 and 2020.
It is notable that all sorts of waste shown witnessed general upwards recycled rates over the 10-year period. The figure for reused plastic was the lowest in each year.
In 2000, the recycled rate of cans was around 13% which slightly surpassed the other three kinds of waste, plastic, paper and metal, making cans become the most available waste to be recycled. However, over the following 5 years, cans saw a minor declining percentage in recycling to a nadir of 12% ranking the last by 2005. By contrast, the recycled shares for metal, paper and plastic increased in diverse degrees, reaching 29%, 18% and 13%, respectively.
By 2010, the recycled figures for four kinds of waste provided were all over one-quarter. The metal, paper and plastic exhibited a similar growth proportion in recycling and metal maintained it position as the most recyclable waste. Simultaneously, cans came in second after experiencing a dramatic increase by one-fifth.
