What is the 4-Year Goal / 5-Year Goal? How do you calculate additional removals required to clear backlog in 4 years / 5 years in the HSEView Demand & Capacity component?

These goals provide analysis on removing all Patients Waiting Over Target from current waiting list, and to maintain balance in 4 years’ time for IPDC and GI Scopes, and 5 years’ time for Outpatients.

The removals required per week to remove all Current Patients Waiting Over Target within 4 years, 
{Current Patients Waiting Over Target/(52*4)}

or 

The removals required per week to remove all Current Patients Waiting Over Target within 5 years,
{CurrentPatients Waiting Over Target/(52*5)} .