The population of deme C held at 9353 until 8492.869 generations back, when it decreased reaching 9043, which has been constant since then.
time_units: generations
demes:
  - name: C
    start_time: .inf
    epochs:
      - start_size: 9353
        end_time: 8492.869
      - start_size: 9043
        end_time: 0