TORONTO, Jan. 10 (Xinhua) -- Canada's main stock index continued down Wednesday when Canada is increasingly convinced the United States will withdraw from the North American Free Trade Agreement.

The Toronto Stock Exchange's benchmark Standard&Poor's/TSX Composite Index fell 71.29 points, or 0.44 percent, to 16,247.95. Nine of the index's 10 main sectors closed lower.

The Canadian dollar rose 4.2 cents to 0.79.74 U.S. dollar.

Canadian National Railway Co. declined 2.7 percent to 101.87 Canadian dollars and Canadian Pacific Railway Ltd fell 3.1 percent to 225.52 Canadian dollars while TransCanada Corp lost 2.4 percent to 59.57 Canadian dollars and Enbridge Inc dropped 2.1 percent 49.11 Canadian dollars. Magna dipped 3.2 percent to 71.44 Canadian dollars.

Miner Klondex Mines Ltd plunged 11.5 percent to 2.62 Canadian dollars.

The energy group edged down 0.1 percent, although Crescent Point Energy Corp rose 4.5 percent to 10.94 Canadian dollars.