I hate percentage growth graphs, since for areas with little residential population (industrial, greenfield) Ma Clampett dies and the population drops by 20% as a result. I prefer dot density diagrams myself. Here's the 2013-2014 net population change, with one dot representing 10 people (red for decrease, green for increase; sorry if there are any colourblind folks; let me know and I'll provide another version.)
Here it is for the entire 2010-2014 period:
What is instructive, though, is to compare it to the 2006-2010 period, which is much more typical of the growth pattern Calgary has historically had, where older suburbs (i.e. ~20-30 years old) lose population as children move out of home. (Actually, the historical trend was for the middle of the donut to have flat population, not the gain seen here):