 The "'Office des transports coloniaux" (or "Colonial transport agency, OTRACO) was established, in 1935, as a public body, and renamed the "Office des transports au Congo" (OTRACO) in 1960, finally becoming the "Office National des Transports" (ONATRA) in 1971.In 1973, ONATRA carried its largest number of passengers ever, a total of 410,871.In 1977, the government decided to end ONATRA's monopoly of river transport, and to allow any individual or company to own and operate river boats.