By Commodity News Service Canada WINNIPEG, Dec. 21 (CNS Canada) – The Canadian dollar was down at market close Friday with gloom ruling the major North American stock markets. The dollar closed at US$0.7371 or US$1=C$1.3566, which compares with Thursday’s close of US$0.7410 or C$1.3495. The S&P/TSX Composite Index closed Friday at 13,935.44 down by
