The Z deme's size was 7317 until 9316.1 generations ago, when it began a exponential decrease, reaching 755 individuals by 7970.0. After this period, the population underwent an linear growth, reaching 8979 individuals by 6243.7. From 6243.7 generations ago to now, the population changed from 8979 to 3690 at a exponential rate.
time_units: generations
demes:
  - name: Z
    start_time: .inf
    epochs:
      - start_size: 7317
        end_time: 9316.1
      - start_size: 7317
        end_size: 755
        end_time: 7970.0
        size_function: exponential
      - start_size: 755
        end_time: 6243.7
        end_size: 8979
        size_function: linear
      - end_time: 0
        start_size: 8979
        end_size: 3690
        size_function: exponential