N purchased a home in Toronto in $2009.$ N was transferred by his employer from Toronto to Vancouver in $2011.$ N was transferred back to his employer's Toronto office and moved back into his Toronto home in $2017.$ N sold his Toronto home in $2023.2017$ the Toronto home was rented to a young couple through a rental agency. For how many of the Years $2011$ through $2017$ does the Toronto home qualify to be designated as a principal residence, assuming an ITA $45(2)$ election was made with N$\text{'}$s tax return for $2011$ not to recognize the change of use?

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