...numbers are from earlier this year:

Troops currently in Afghanistan

United States: 29,000, with about 19,000 serving in NATO's International Security Assistance Force (ISAF) effort and    the rest serving under U.S. command
          Fatalities: 419 (includes deaths in Pakistan and Uzbekistan)
Britain: 7,800
          Fatalities: 89 (includes civilians from the Ministry of Defense)
Germany: 3,210
          Fatalities: 26
Italy: 2,880
          Fatalities: 12
Canada: 2,500
          Fatalities: 81
Australia: 1,000 (not a NATO member)

{note: the high death count among Canadians is due to the dangerous assignments they are given}