The Z deme's size was 6739 until 9620.3 generations ago, when it began a linear reduction, reaching 4757 individuals by 3435.2. After this period, the population underwent an exponential reduction, reaching 4736 individuals by 3225.628. From 3225.628 generations ago to now, the population changed from 4736 to 2463 at a linear rate.
time_units: generations
demes:
  - name: Z
    start_time: .inf
    epochs:
      - start_size: 6739
        end_time: 9620.3
      - start_size: 6739
        end_size: 4757
        end_time: 3435.2
        size_function: linear
      - start_size: 4757
        end_time: 3225.628
        end_size: 4736
        size_function: exponential
      - end_time: 0
        start_size: 4736
        end_size: 2463
        size_function: linear