Voluntary sales increased again in 2013, reaching $6.644 billion, up from $6.03 billion in 2012, according to new data released by Eastbridge Consulting Group.

Eastbridge president Gil Lowerre said they are “very pleased” with the findings, adding that “over $6.6 billion in new sales is an outstanding achievement.”

Determining the actual percentage increase, however, was difficult, Eastbridge said, due to several new companies and other companies changing the way they report voluntary sales. That being said, they estimated the annual industry sales increase at about 4.3 percent.