The 100 that you refer to is including even those that are retiring. Greener pastures - read rice fields for some.
There is always an increase number leaving post bonus .
100 to date might total 200 for the year , personally my guess will be 150 -175. 3.37% - 5% . Bean counters deal with numbers and won't get excited about those.
Sky is not falling as some would like to believe