With aviation traffic growing at the Saint-Hubert Airport, the government decided that Montreal needed another airport to suit the growing aviation industry. In 1941, the government opened Dorval as the new airport. It had three lage, paved runways, giving it the capacity to serve almost every airliner in the world. From the time it opened, it was constantly among Canada's busiest airports. It would serve over a million passengers in the 1950's. With this new airport, Montreal experienced a period of big economic growth. Dorval made Montreal become Canada's most important economy. In the 1960's, Montreal became the port of entry into Canada. In other words, all passengers that wanted to enter Canada had to enter through Montreal, as it was the airport wwoth the most service to international destinations. In the 1960's, the terminal was expanded to handle the massive amount of traffic in Montreal. It would be Canada's largest passenger terminal.