By Glen Hallick Glacier FarmMedia – The Canadian dollar slipped below 72 U.S. cents at the close on Friday, as the currency continued its downward slide. The loonie finished at US$0.7196 or US$1=C$1.3896 compared to Thursday’s finish of US$0.7212 or US$1=C$1.3866. On the United States Dollar Index, the greenback remained on its upswing, tacking on