Swiss Association for Material Management and Purchasing.The PMI gives a picture of the business trend in the industrial sector. The PMI corresponds to a weighted average of its subindices; output, backlog of orders, suppliers' delivery times, stock of purchases and employment.The Swiss Purchasing Managers' Index (PMI) has existed since January 1995. It was created jointly by the Swiss Association for Materials Management and Purchasing (SVME) and Credit Suisse