KARACHI (Reuters) - Net foreign investment in Pakistan fell 14.8 percent to $1.90 billion in the first 11 months of the 2009/10 fiscal year, compared with $2.23 billion in the same period last year, the SBP said on Tuesday. Out of the total foreign investment, foreign direct investment fell 39pc to $2.03b in the July to May period, from $3.33b in the year-ago period, the State Bank of Pakistan said. A worsening security situation, a Taliban insurgency in the countrys northwest and chronic power shortages have put off investors, analysts say. There was a net outflow of $133.8m of foreign portfolio investment in the first 11 months of this fiscal year, compared with a net outflow of $1.10b in the same period last year. Authorities imposed a floor of 9,144 points on the Karachi Stock Exchange benchmark index in August 2008 as political uncertainty and economic and security worries drained investor confidence. The floor discouraged new investment and when it was removed in December 2008 led to a sharp outflow of funds, as foreign investors sold holdings in off-market trade. Pakistan turned to the IMF in November 2008 to avert a balance of payments crisis and to shore up reserves. It received the fifth tranche of $1.13 billion of a $10.66 billion emergency loan last month.