For example, 13.5% of everybody deployed to Afghanistan, 40,000 troops, we anticipate based on a pretty good study to develop a mental health condition, an operational stress injury that's directly attributed to Afghanistan. That number over the course of nine years we extrapolate to increase to about 20% of everybody who deployed.
Eight percent at four and a half years for PTSD alone extrapolated to about 11.8% after about nine years post-deployment, compared to a lifetime prevalence of PTSD in the general population of anywhere from 7% to 9%. So it shows us that there's a very significant burden specifically resulting from the experience in Afghanistan.