In the early forties of the 20th century, Western Union has used the first time a commercial intercity microwave transmission system. In 1866, Sibley ordered the engineers to develop a Western Union telegraph system of stock quotes in real time. July 3, 1884 the company's shares were included in the calculation base for the newly created stock index Dow Jones Transportation Average. Western Union incomes for 2007 have made $4,9 billion US dollars, and the quantity of transactions has made 572 million. Before transition to remittances Western Union company rendered services on sphere of cable communication. In October 1871 the company Western Union began to provide money transfer services, drawing on its own extensive telegraph network. In 1884 Western Union has become a joint-stock company and was brought to the stock exchange. The company has entered in the first American stock index Dow Jones.