The Supplemental Nutrition Assistance Program (SNAP), formerly known as the Food Stamp Program, is in the news these days because of comments made by some Republican presidential candidates. Below are five things you probably don’t know about the program.

A large and growing share of SNAP households are working households (see chart). In 2010, more than three times as many SNAP households worked as relied solely on welfare benefits for their income.

The share of SNAP households with earnings has continued growing in the past few years — albeit at a slower pace — despite the large increase in unemployment.

One reason why SNAP is serving more working families is that, for a growing share of the nation’s workers, having a job has not been enough to keep them out of poverty.