Until 8896.8028 generations ago, the population of deme S was 7194. At that point, it decreased to 4233, where it has stayed up to now.
time_units: generations
demes:
  - name: S
    start_time: .inf
    epochs:
      - start_size: 7194
        end_time: 8896.8028
      - start_size: 4233
        end_time: 0