An industry body that supervises the recovery of used personal computers said Wednesday its member computer makers have collected 186,302 PCs over the past 12 months.

The PC 3R Promotion Center, allied with the Japan Electronics & Information Technology Industries Association, said the number represents roughly 30 percent of the PCs thrown away by individual users. The data do not include PCs jettisoned by corporations.

The percentage calculation is based on data including past PC shipments and the estimated periods of use for the recovered computers, according to the center, which started the recovery campaign in October last year.

Most PC makers operating in Japan are members of the center.