Recent Trends in Federal Civilian Employment and Compensation

From GAO:

Retirement rates fell to a low of around 2.5 percent during the recession in 2009, and then increased to pre-recession rates in 2011 and 2012. With respect to retirement eligibility, of the 1.96 million permanent career employees on board as of September 2012, nearly 270,000 (14 percent) were eligible to retire. By September 2017, nearly 600,000 (around 31 percent) will be eligible to retire, government-wide.

and

While the federal civilian workforce grew in size from 2004 to 2012, most of the growth was concentrated in three federal agencies and was driven by the need to address some of the nation’s pressing priorities.