The Purchasing Managers Index is a monthly survey of business conditions, using identical survey methodology in each country participating in the surveys.Markit produces the service sector report on behalf of Reuters. Each month questionnaires are sent to a panel of 500 companies, selected to accurately reflect the structure of the services sector. Data are collected relating to: business activity, incoming new business, amount of business outstanding, employment, input prices, prices charged and business expectations. Diffusion indices vary between 0 and 100 with a level of 50.0 signalling no change on the previous month. Readings above 50.0 signal an increase on the previous month. Readings below 50.0 signal a decrease. The greater the divergence from 50.0, the greater the rate of change signalled.