There's a major question of where this extra income is coming from and what the occupations of the lower income earners are and would require further investigation. If the lower end workers are fairly unskilled jobs with easily expendable staff, then I'm not sure we should be expecting them to keep pace with some of the expansion in Calgary.
Looking at it from the other side, it could be an investigation of whether or not the higher income earners are getting their money by working skilled, specialized jobs.
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