A Dallas Cowboys fan wears a giant helmet before the Cowboys play the Minnesota Vikings in their NFL Divisional playoff football game in Minneapolis, Minnesota, January 17, 2010. Eric Miller/Reuters
Economists anticipate the gauge slipped to 15.0 after posting a reading of 15.5 in December.
The measure has held above zero, a sign of expansion, for two straight months after not registering a reading above the level since December 2014.