TORONTO, Sep 17 (Reuters) - Toronto Stock Exchange S&P/TSX composite index .GSPTSE :
* Falls 161.12 points, or 0.99 percent, to 16,134.54 at open.TORONTO, Sep 17 (Reuters) - Toronto Stock Exchange S&P/TSX composite index .GSPTSE :
* Unofficially closes down 50.27 points, or 0.31 percent, at 16,245.39.