Chair Janet L. Yellen: The Economic Outlook 2016.

The U.S. economy has made further progress this year toward the Federal Reserve's dual-mandate objectives of maximum employment and price stability. Job gains averaged 180,000 per month from January through October, a somewhat slower pace than last year but still well above estimates of the pace necessary to absorb new entrants to the labor force. The unemployment rate, which stood at 4.9 percent in October, has held relatively steady since the beginning of the year. The stability of the unemployment rate, combined with above-trend job growth, suggests that the U.S. economy has had a bit more "room to run" than anticipated earlier. This favorable outcome has been reflected in the labor force participation rate, which has been about unchanged this year, on net, despite an underlying downward trend stemming from the aging of the U.S. population.

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https://www.federalreserve.gov/newsevents/testimony/yellen20161117a.htm