BP's Rental Property Calc - "Analysis Over Time"

[Ben Williams]

I'm having trouble understanding all the numbers in the Analysis Over Time section of the Rental Calculator.  Can anyone point me to a resource that explains it all? I've searched BP and on Google but can't find a detailed explanation. 

I'm particularly interested in understanding how the Annualized Total Return is calculated and what it means (or what to compare it to) and why it trends downward over the years, event though the Cash on Cash return trends upward. 

I'm typically making the assumption in my area that Expenses increase at 2%, Income Increases at 3%, and Property Value increases at 4% (all on an annual basis).