A couple of relevant linkies - http://www.calculate...ery-measures.html
http://economistsvie...n-output-gap.html
The usual hope and expectation is that the economy returns to its trend-line after a recession. I'm not sure I accept that growth will accelerate and we'll reach the trendline in 2018 or so. We could certainly reach it sooner with the right policies, and if we don't get better policies it may be later still.
My $0.02.
Cheers,
Scott.