For those looking for the source of this data, here is a link to the DASD Program Support that puts these reports together every quarter. They have been very useful and I have put everyone of them into my Scribd if you would like to reference and check this stuff out.
William over at Danger Zone Jobs has been tracking this data over the years and he has put together some excellent graphics showing exactly what the trends are over the last seven quarters. Here are some samples below and there are more at his post.
Pretty interesting, and you can visually see the heavy use of contractors in Afghanistan, even as the war winds down. Probably the most interesting graph is the use of American contractors in Afghanistan.
Interesting stuff and check it out below. -Matt