The line graph presents the percentage of four different materials that were recycled from 1982 to 2010 in a certain country.
Overall, except for paper and cardboard, all materials witnessed increases in 2010. Paper and cardboard, as well as glass containers, saw the largest fluctuations, while aluminum cans increased relatively steadily. Additionally, paper and cardboard remained the highest proportion over the years.
Paper and cardboard have seen a large fluctuation, reaching 70 percent in 1986 and falling again to around 65% in 1990, before making a massive jump to 80% in 1994, which then gradually declined to 70 percent in 2010. Glass containers had the lowest number in 1990 with 40 percent, which then made a dramatic increase to 60 percent in 2010.
Moreover, aluminum cans started at just below 10, exponentially grew over the years to nearly 50 percent in 2010. In contrast, plastics only witnessed a modest increase from approximately 3 percent to nearly 10 percent in 2010, remaining the lowest number among all materials. Despite the reduction, paper and cardboard continued to maintain the highest percentage in 2010.
