Stockhouse tells MHProNews the Canada Mortgage and Housing Corporation (CMHC) says the outlook for average rental apartment vacancies is not expect to change from the second quarter forecast of 2.2% for this year and 2.1% for 2012. Regionally for 2013 the lowest vacancy rates are forecast for Vancouver at 0.9%, Regina at 1.0%, and Calgary and Toronto both at 1.5%. Rental rates are expected to increase in 2013 in Calgary by 4.3%, in Edmonton by 3.8%, and in Vancouver by 3.1%. The strong energy development in Alberta is anticipated to drive the gross domestic product (GDP) in that province to 3.4% this year, and 3.2% in 2013, the best in the nation. Migration into Alberta because of the increased labor demand is the strongest since 1970, forecast to be 57,800 this year and 48,500 expected in 2013.