It is information received from surveys of purchasing managers regarding the industries associated with the service sector. Readings below 45-50 tell about reduction in economic development. Index ISM Service (USA) is often influenced by emotion factors, rather than the actual situation. The process of services consumption tends to change at a relatively constant rate, therefore sharp changes in this index value are caused precisely by emotion factors. The indicator has significant online forex market influence. A value increase of this index leads to the US dollar rate growth. The data on ISM Service Index (NAPM) is published on the next day after publishing of ISM Index (NAPM).