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 generally upward 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 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 last by 2005. By contrast, the recycled shares for metal, paper and plastic increased to diverse degrees, reaching 29%, 18% and 13%, respectively.
By 2010, the recycled figures for the four kinds of waste were all over one-quarter. The metal, paper and plastic exhibited a similar growth proportions in recycling, and metal maintained its position as the most recyclable waste. Simultaneously, cans came in second after experiencing a dramatic increase of one-fifth.
