Restaurant sales slow again in March

This post is part of the On the Margin blog.
Restaurant sales rose 2.8 percent in March, according to federal data, slowing for the second straight month as the industry faces its weakest environment in more than three years.
The result was a slowdown from the 3.7 percent growth in February, and was the lowest since December. Yet, outside of a 6-percent growth rate during the weather-aided month of January, sales since December have been at their lowest rates since 2013.
That was the year