For most countries, data on total waste in place are not available and have to be developed from waste generation rates. The total annual waste generation rate (Tg/yr) is obtained by multiplying MSW rates with population data. The following are the coefficients. Per capita MSW generation rates range from 1.7 to 1.9 kg/day for the U.S. and Canada. Per capita MSW generation rates in other developed countries are about 1.2 kg/day. For developing countries, rates are about 0.8 kg/day for urban, and 0.3 kg/day for rural areas.