Edmonton, the capital of Alberta, is home to nearly 1.2 million people, making it the fifth largest city in Canada. Approximately 45% of current residents moved to the city from 2006 to 2011. The city is strong economically and is the main jumping-off point for oil and gas industries operating in northern Alberta. The University of Alberta is the largest educational institution in the city, but other smaller universities and colleges are present. There are over 450,000 dwellings in Edmonton of which 29% are being rented, which reflects Edmonton's large supply of rental apartments, about 58,000 apartments. Unlike Calgary, where the number of apartments for rent fluctuates as rentals are converted to condominiums and back again, Edmonton has historically contained a steady supply of rental apartments. Rental apartments in Edmonton are relatively affordable compared to other major cities in Canada, since three-quarters of Edmonton households are spending less than 30% of their incomes on housing.