The number of individuals in deme A remained at 1736 until 4691.0 generations ago, at which time it grew to a new stable size of 8852.
time_units: generations
demes:
  - name: A
    start_time: .inf
    epochs:
      - start_size: 1736
        end_time: 4691.0
      - start_size: 8852
        end_time: 0