Until 6710.39 generations ago, the D deme's population was fixed at 7390. From 6710.39 to 4946.91, it underwent a exponential reduction to 6075 individuals. Then, a exponential change brought the count to 5550 by 4061.0. Since then, from 4061.0 generations to the current day, the population has changed from 5550 to 9717 at a exponential rate.
time_units: generations
demes:
  - name: D
    start_time: .inf
    epochs:
      - start_size: 7390
        end_time: 6710.39
      - start_size: 7390
        end_size: 6075
        end_time: 4946.91
        size_function: exponential
      - start_size: 6075
        end_time: 4061.0
        end_size: 5550
        size_function: exponential
      - end_time: 0
        start_size: 5550
        end_size: 9717
        size_function: exponential