P moved out of his Ottawa home in 2014 and commenced renting the home through a rental agency to a young couple. An election was made with P's tax return for 2014 not to recognize the change of use. P moved back into his Ottawa home 6 years later. P lived in a condominium in downtown Ottawa during the years he did not live in his Ottawa home. For how many of the years,throughout which P did not live in the home, does the Ottawa home qualify to be designated as a principal residence?