If the current annual rent is less than 10% of the average market price, then there is no increase applicable.
If the current annual rent is 11% to 20% below the average market price, then the maximum rental increase is 5%.
If the current annual rent is 21% to 30% below the average market price, then the maximum rent increase 10%.
If the annual rent on the property is 31% to 40% below the the average market price, then the maximum rent increase is 15%.
If the annual rent on the property is more than 40% below the the average market price, then the maximum rent increase is 20%.