The domestic company index decreased by 0.09 percent during the week ending December 29, closing at 8 860.13 points from 8 867.92 points the previous week, as indicated by Stockbrokers Botswana  weekly report. For the year-to-date, the index declined by 5.75 percent. A total of 285 767 securities valued at P708 790 were traded during the week.