Deme W maintained a population of 1726 until there was a shift 7987.2 generations ago that grew its numbers to 9642, a figure that has remained the same since.
time_units: generations
demes:
  - name: W
    start_time: .inf
    epochs:
      - start_size: 1726
        end_time: 7987.2
      - start_size: 9642
        end_time: 0