According to Gartner, Inc, manufacturers shipped 305.8 million computers in 2010.  55% of these were mobile PCs (notebooks, netbooks, tablets). Ninety six million of these were to the U.S.

CRTs have relatively high concentration of lead and phosphors (not phosphorus), both of which are necessary for the display. The United States Environmental Protection Agency (EPA) includes discarded CRT monitors in its category of "hazardous household waste".