For the first few months of the surge, violence increased.[66][67][68] However, by the fall of 2007, the security situation had improved significantly.[69] U.S. military deaths fell from a peak of 126 in May 2007 to 23 in December, and during the period after the surge (June 2008 to June 2011), the monthly average was less than 11. In May 2007, over 1,700 Iraqi civilians were killed, compared to approximately 500 in December. The average from June 2008 to June 2011 was approximately 200.[70]