据美国铝业协会、美国制罐业协会和废料回收工业协会(ISRI)的统计,1992年,美国回收的全铝易拉罐达630亿个,几乎占总交货量的68%,创历史最高记录。1991年回收的全铝易拉罐为570亿个,占交货量的62.4%。美国从1972年起对铝罐回收进行统计,那年仅回收了12亿个,仅为交货量的15.4%。全铝易拉罐的重量在逐年下降,1972年罐的平均重量为 According to the AIA, the American Canning Industry Association and the Waste Recycling Industry Association (ISRI), in 1992, the United States recovered 63 billion aluminum cans, accounting for almost 68% of the total deliveries, setting a record high . The total aluminum cans recovered in 1991 were 57 billion, accounting for 62.4% of the total deliveries. The United States has been counting aluminum cans for recycling since 1972, recovering only 1.2 billion units that year, only 15.4% of deliveries. The weight of aluminum cans is declining year by year. In 1972, the average weight of cans was