In Kenya, the CfC Stanbic Bank Purchasing Managers' Index measures the performance of agriculture, mining, manufacturing, services, construction and retail sectors and is derived from a survey of 400 companies. The Manufacturing Purchasing Managers Index is based on five individual indexes with the following weights: New Orders (30 percent), Output (25 percent), Employment (20 percent), Suppliers’ Delivery Times (15 percent) and Stock of Items Purchased (10 percent), with the Delivery Times index inverted so that it moves in a comparable direction. A reading above 50 indicates an expansion of activity compared to the previous month; below 50 represents a contraction; while 50 indicates no change.