ISM reports slight decline in April non-manufacturing output, while growth remains intact by admin | May 4, 2018 The index ISM uses to measure non-manufacturing growth—known as the NMI–dropped 2.0% to 56.8 (a reading above 50 indicates growth) in April. The April NMI is 0.08% below the 12-month average of 56.8. Powered by WPeMatico Share this:Tweet Related Submit a Comment Cancel reply Your email address will not be published. Required fields are marked *Comment Name * Email * Website Notify me of follow-up comments by email. Notify me of new posts by email.