OMAHA, Neb. (AP) — Figures from a survey of supply managers in nine Midwest and Plains states have dropped again and suggest slow or no economic growth ahead.

A report issued Monday says the Mid-American Business Conditions index fell to 47.6 last month from 50.1 in June.

Creighton University economist Ernie Goss oversees the survey, and he says global economic uncertainty, including Britain’s vote to leave the European Union, was a significant concern for many of the supply managers in the survey.

The survey results are compiled into a collection of indexes ranging from zero to 100. Survey organizers say any score above 50 suggests economic growth. A score below that suggests decline. The survey covers Arkansas, Iowa, Kansas, Minnesota, Missouri, Nebraska, North Dakota, Oklahoma and South Dakota.