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.
Interesting stuff and check it out below. –Matt
Contractor Support Of USCENTCOM AOR, 1st Quarter FY 2013 by Feral Jundi