The deme of W kept its population at 8681 until 9215.0 generations ago, when a linear change ensued until 6334.292, to size 6818. Subsequently, a exponential change changed the numbers to 9984 individuals by 3949.239. Starting from 3949.239, the population has seen a change from 9984 to 8240 at a exponential pace, continuing to this day.
time_units: generations
demes:
  - name: W
    start_time: .inf
    epochs:
      - start_size: 8681
        end_time: 9215.0
      - start_size: 8681
        end_size: 6818
        end_time: 6334.292
        size_function: linear
      - start_size: 6818
        end_time: 3949.239
        end_size: 9984
        size_function: exponential
      - end_time: 0
        start_size: 9984
        end_size: 8240
        size_function: exponential