On 16 January 1970, the manufacturer celebrated the 25th anniversary of its 1945 rebirth as the nationalised "Régie Nationale des Usines Renault". The 1960s had been a decade of aggressive growth: a few months earlier, in October 1969, the manufacturer had launched the Renault 12, combining the engineering philosophy of its hatchbacks with the more conservative "three-box" design. The four-door Renault 12 model fit between the Renault 6 and Renault 16. The model was a success. 1970 was also the first year during which Renault produced more than a million cars in a single year, building 1,055,803.