At What Rate do Operating Expenses Increase Annually in Ontario?

[Sam A.]

Rent increases at a rate of 1.6% per year. 

To calculate total accumulated cashflow, I calculate: income (+1.6% annually) - operating expenses (changing over time) - mortgage payments (constant). At what rate do operating costs typically increase? Does the cost of some expenses increase at a faster rate than others? Do utilities increase at a greater rate than, for example, property tax?