Then indeed you are the guy who lives in a van by the river.  To suggest that a property in Calgary has had the same value for 10 years is disingenuous to say the least.  

Clearly the 51% increase is not representative of every homeowner.  But your claims of 0 change is complete BS.

My property assessment has increase about 32% since Nenshi was elected, my property taxes have increased 113%.  Further, even though the assessment was marginally lower this past year my property tax bill was marginally higher than the previous year.

So it is more than simply a function of changes in property assessment.