Up to 8999.536 generations ago, the population of the Y deme was steady at 8082. It then entered a phase of linear change until 6861.4 generations and size 1265. Following this, there was a exponential change to 9774 individuals, lasting until 1374.2273. Since 1374.2273 generations ago, the population has changed from 9774 to 9411 at a linear pace.
time_units: generations
demes:
  - name: Y
    start_time: .inf
    epochs:
      - start_size: 8082
        end_time: 8999.536
      - start_size: 8082
        end_size: 1265
        end_time: 6861.4
        size_function: linear
      - start_size: 1265
        end_time: 1374.2273
        end_size: 9774
        size_function: exponential
      - end_time: 0
        start_size: 9774
        end_size: 9411
        size_function: linear