a few hundred people, the city has arranged for a corporation offer rental of crockery and dishwasher equipment. In part through this regulation, Munich reduced the waste generated by Oktoberfest, which attracts tens of thousands of people, from 11,000 metric tons in 1990 to 550 tons in 1999. China produces about 57 billion pairs of single-use chopsticks yearly, of which half are exported. About 45 percent are made from trees – about 3.8 million of them – mainly cotton wood, birch, and spruce, the remainder being made from bamboo. Japan uses about 24 billion pairs of these disposables per year, and globally about 80 billion pairs are thrown away by about 1.4 million people. Reusable chopsticks in restaurants have a lifespan of 130 meals. In Japan, with disposable ones costing about 2 cents and reusable ones costing typically $1.17, the reusables better the $2.60 breakeven cost. Campaigns in several countries to reduce this waste are beginning to have some effect. Waste and socioeconomic status Waste from disposable products is often shipped from richer to poorer nations, causing environmental and social problems for developing nations. Most notable are the large shipments of trash from North America and Western Europe to Africa and Asia due to the relatively low cost of disposal. By the 1990s, over half of all nations in Africa have faced negative externalities from toxic waste dumped by richer countries. Waste, both toxic and non-toxic is often dumped without safety regulations. It is thrown in unlined and unregulated landfills where it contaminates soil and water, and even burnt, which circulates toxins in the air. Recently, electronic waste shipped to Nigeria has increased due to higher consumption of electronics by North America and Europe, with hundreds of shipments of old electronics dropped off at Lagos, Nigeria, every month. A significantly large percentage of the trash being hazardous waste shipped with the "explicit intent of cheap (and unsafe) disposal". China also receives huge amounts of waste, often toxic material, averaging 1.9 million tons per year, because companies find it cheaper to ship garbage away rather than dispose of it themselves. Food waste In 2004, a University of Arizona study indicates that forty to fifty percent of all edible food never gets eaten. Every year $43 billion worth of edible food is estimated to be thrown away. The rise of mass consumption in America Following the end of World War II, America