Numbers: Jan. 9, 2006

$439.5 billion Estimated U.S. retail sales during the 2005 holiday season, up 6% from last year

$1 billion Estimated revenue New York retailers lost in the three-day transit strike

216,000 Number of veterans who received benefit payments for post--traumatic stress disorder in 2004, at a cost of $4.3 billion, up 150% since 1999

61% Percentage of U.S. adult males in a mental-health survey who said they've had at least one traumatic event in their lifetime

67 Average number of children between the ages of 7 and 15 who visit British emergency rooms each weekend with broken bones

55% Percentage the average dropped on weekends after the two most recent Harry Potter books were released

$40.4 billion Estimated cost to insurance companies of Hurricane Katrina claims

$13 billion Amount insurers have paid out in Mississippi and Louisiana so far

Sources: National Retail Federation; New York City Mayor's Office; Washington Post; National Comorbidity Study; British Medical Journal (2); Bloomberg; Jackson, Miss., Clarion-Ledger and Louisiana department of insurance