Vancouver population growth from 1981 to 2001 using open data and Quantum GIS
Here is a map created using Quantum GIS and some open data from the City of Vancouver. It graphs the population growth in Vancouver for each local area from 1981 to 2001. Interesting to note is how much the residential housing boom downtown affected the population growth compared to other areas.
I also created a short screencast showing how to do the calculation yourself: