The Z deme held its population size constant at 1074 until 8252.77 generations ago, then experienced a linear growth up to 6418 individuals by time 7463.3004. This was followed by an linear change, resulting in 7856 individuals by 2393.203. From 2393.203 generations onward to the present, the population has been on a exponential increase from 7856 to 9989.
time_units: generations
demes:
  - name: Z
    start_time: .inf
    epochs:
      - start_size: 1074
        end_time: 8252.77
      - start_size: 1074
        end_size: 6418
        end_time: 7463.3004
        size_function: linear
      - start_size: 6418
        end_time: 2393.203
        end_size: 7856
        size_function: linear
      - end_time: 0
        start_size: 7856
        end_size: 9989
        size_function: exponential