Expense increase on rental property calculator?

[Mitchell Barna]

When I use the biggerpockets rental property calculator I can see my cash on cash return for the first year but then in year 15 for example, it is negative. Why do these expenses increase? I have my rent set to not increase to make conservative estimates, but I do not understand this increase as when I move to thay year, that value is not given. It is the original value for expense even though it says it goes up on the total, the breakdown does not add up to that total value.

Also this is my first post Thank you guys I am looking forward to this journey