B deme's population was steady at 9803 before it decreased to 9024 8852.6574 generations ago, maintaining that number to the present.
time_units: generations
demes:
  - name: B
    start_time: .inf
    epochs:
      - start_size: 9803
        end_time: 8852.6574
      - start_size: 9024
        end_time: 0