The deme of F kept its population at 7389 until 8769.891 generations ago, when a exponential change ensued until 7608.0, to size 5917. Subsequently, a exponential increase changed the numbers to 8199 individuals by 7507.882. Starting from 7507.882, the population has seen a change from 8199 to 2517 at a exponential pace, continuing to this day.
time_units: generations
demes:
  - name: F
    start_time: .inf
    epochs:
      - start_size: 7389
        end_time: 8769.891
      - start_size: 7389
        end_size: 5917
        end_time: 7608.0
        size_function: exponential
      - start_size: 5917
        end_time: 7507.882
        end_size: 8199
        size_function: exponential
      - end_time: 0
        start_size: 8199
        end_size: 2517
        size_function: exponential