It's really the demographics of our workforce and of hiring of baby boomers starting back in the early 1980s. It's numerical, I think. In general, the public service has a relatively low rate of attrition through avenues other than retirement, and so our attrition is largely driven by retirement and therefore really driven by the age of our workforce. If we were to look at the age of our workforce and its statistical profile, you'd find it, over the last two decades, going from being relatively weighted on the younger side towards being relatively weighted on the older side, and those are the people who are now eligible for retirement.
On March 29th, 2010. See this statement in context.