Until 9590.2171 generations ago, the D deme's population was fixed at 8699. From 9590.2171 to 7819.3237, it underwent a exponential change to 9131 individuals. Then, a exponential change brought the count to 8085 by 1774.186. Since then, from 1774.186 generations to the current day, the population has changed from 8085 to 1706 at a exponential rate.
time_units: generations
demes:
  - name: D
    start_time: .inf
    epochs:
      - start_size: 8699
        end_time: 9590.2171
      - start_size: 8699
        end_size: 9131
        end_time: 7819.3237
        size_function: exponential
      - start_size: 9131
        end_time: 1774.186
        end_size: 8085
        size_function: exponential
      - end_time: 0
        start_size: 8085
        end_size: 1706
        size_function: exponential