Up until 9396.383 generations ago, the population of X deme was constant at 2800. It then entered a linear phase of change until 6788.0 generations, reaching size 2137. This was succeeded by an linear phase of change, leading to 7601 by 1422.0. From 1422.0 generations to present, the population has grew from 7601 to 8486 exponentially.
time_units: generations
demes:
  - name: X
    start_time: .inf
    epochs:
      - start_size: 2800
        end_time: 9396.383
      - start_size: 2800
        end_size: 2137
        end_time: 6788.0
        size_function: linear
      - start_size: 2137
        end_time: 1422.0
        end_size: 7601
        size_function: linear
      - end_time: 0
        start_size: 7601
        end_size: 8486
        size_function: exponential